Economic geography: what are agroclimatic resources? What are agroclimatic resources? Which areas of our country are richest in these resources.

Agroclimatic resources are understood as climate resources in relation to requests Agriculture. Air light, heat, moisture and nutrients are called life factors of living organisms. Their combination determines the possibility of vegetation of plant or vital activity of animal organisms. The absence of at least one of the life factors (even if there is optimal options all others) leads to their death. Various climatic phenomena (thunderstorms, cloudiness, winds, fogs, snowfalls, etc.) also have a certain effect on plants and are called environmental factors. Depending on the strength of this effect, plant vegetation is weakened or strengthened (for example, with strong winds, transpiration increases and the plant’s need for water increases, etc.).

Light. The factor that determines the energy basis of the entire diversity of plant life (their germination, flowering, fruiting, etc.) is mainly the light part of the solar spectrum. Only in the presence of light does the most important physiological process, photosynthesis, arise and develop in plant organisms. When assessing light resources, the intensity and duration of illumination (photoperiodism) are also taken into account.

Warm. Each plant requires a certain minimum and maximum heat for its development. The amount of heat, necessary for plants for the complete completion of the vegetation cycle is called the biological sum of temperatures. It is calculated as the arithmetic sum of average daily temperatures for the period from the beginning to the end of the plant’s growing season. Temperature limit the beginning and end of the growing season, or a critical level limiting active development crops, is called biological zero or minimum. For different ecological groups of crops, the biological zero is not the same. For example, for most grain crops of the temperate zone (barley, rye, wheat, etc.) it is +5°C, for corn, buckwheat, legumes, sunflowers, sugar beets, for fruit shrubs and tree crops of the temperate zone +10°C, for subtropical crops (rice, cotton, citrus fruits) +15°C.

Moisture. The most important factor vital activity of plants is moisture. During all periods of life, a plant requires a certain amount of moisture for its growth, without which it dies. Water is involved in any physiological process associated with the creation or destruction organic matter. It is necessary for photosynthesis and provides thermoregulation. plant organism, transports batteries. During normal vegetative development, cultivated plants absorb enormous volumes of water. Often, to form one unit of dry matter, from 200 to 1000 mass units of water are consumed (B. G. Rozanov, 1984).

Agroclimatic zoning is the division of a territory (at any level) into regions that differ in the conditions of growth, development, overwintering and production of food. whole cultivated plants.

1. Division according to the degree of heat supply.

Cold belt. The sum of active temperatures does not exceed 1000°. These are very small heat reserves; the growing season lasts less than two months. Since temperatures often drop below zero at this time, farming in open ground impossible. The cold belt occupies vast areas in northern Eurasia, Canada and Alaska.

Cool belt. Heat supply increases from 1000° in the north to 2000° in the south. The cool belt extends in a fairly wide strip to the south of the cold belt in Eurasia and North America and forms a narrow zone in the southern Andes in South America. Agriculture is of a focal nature, concentrating in the warmest habitats.

Temperate zone. The heat supply is at least 2000° in the north of the belt and up to 4000° in the southern regions. The temperate zone occupies vast territories in Eurasia and North America: it includes all of foreign Europe (without the southern peninsulas), most of the Russian Plain, Kazakhstan, southern Siberia and the Far East, Mongolia, Tibet, northeastern China, southern Canada, and northern United States. On the southern continents, the temperate zone is represented locally: this is Patagonia in Argentina and a narrow strip of the Chilean coast Pacific Ocean in South America, the islands of Tasmania and New Zealand. The duration of the growing season is 60 days in the north and about 200 days in the south.

Warm (or subtropical) zone. The sums of active temperatures range from 4000° on the northern border to 8000° on the southern border. Territories with such heat supply are widely represented on all continents: the Eurasian Mediterranean, the predominant part of the United States and Mexico, Argentina and Chile, the south of the African continent, the southern half of Australia, and Southern China.

Hot belt. Heat reserves are practically unlimited; they everywhere exceed 8000°, sometimes more than 10,000°. Geographically, the hot zone occupies the most extensive land areas of the globe. It includes the predominant part of Africa, most of South America, Central America, all South Asia and the Arabian Peninsula, the Malay Archipelago and the northern half of Australia. In the hot zone, heat ceases to play the role of a limiting factor in the placement of crops. The growing season lasts all year round, the average temperatures of the coldest month do not fall below +15°C

2. Subdivision based on differences in annual moisture regimes.

A total of 16 areas with different meanings moisture coefficient of the growing season:

  • 1. Excessive moisture during the growing season;
  • 2. Sufficient moisture during the growing season;
  • 3. Dry growing season;
  • 4. Dry growing season (probability of droughts more than 70%);
  • 5. Dry throughout the year (the amount of annual precipitation is less than 150 mm. HTC for the growing season is less than 0.3);
  • 6. Sufficient moisture throughout the year;
  • 7. Sufficient or excessive moisture in summer, dry winter and spring (monsoon climate);
  • 8. Sufficient or excessive moisture in winter, dry summer (Mediterranean climate type);
  • 9. Sufficient or excessive moisture in winter, dry summer
  • (Mediterranean climate type)
  • 10. Insufficient moisture in winter, dry and arid summers;
  • 11. Excessive moisture most of the year with 2-5 dry or dry months;
  • 12. Dry most of the year with sufficient moisture for 2-4 months;
  • 13. Dry most of the year with excess moisture for 2-5 months;
  • 14. Two periods of excess moisture with two dry or arid periods;
  • 15. Excessive moisture throughout the year;
  • 16. The temperature of the warmest month is below 10 C (humidification conditions are not assessed).

Table 5

Composition of agricultural land

All agricultural land, million hectares

Of these in percentage

other agricultural land

Great Britain

Germany

Bangladesh

Indonesia

Kazakhstan

Pakistan

Turkmenistan

Tanzania

Argentina

Brazil

Australia

Compiled from: Russia and countries of the world, 2006: stat. Sat./Rosstat.-M., 2006. -P.201-202.

“We need to move to more favorable agro-climatic conditions, otherwise there is not enough warmth and fruit,” my mother-in-law thought in the kitchen. I didn’t understand exactly what conditions we were talking about, but in order not to seem stupid, I didn’t show it, and later I rushed to the Internet to look for information about the agroclimatic conditions of Russia.

Concept of agroclimatic resources

The term “agroclimatic resources” means stable climate conditions that have formed in a specific territory, determining the nature of agricultural economic activity. The world's resources in question are usually assessed as favorable or unfavorable.

This type of resources of any region is determined by the ratio:

  • moisture;
  • Sveta;
  • heat.

Conditions determine the range of agricultural crops that can be grown on the territory. Agroclimatic conditions are distinguished by zones of light, temperature, and moisture. There are states with homogeneous and diverse natural conditions.


Agroclimatic resources of Russia

Russia is characterized by diverse conditions. The sum of temperatures during the growing season in the main agricultural regions of Russia is within the range of 1400-3000 °C. Precipitation in the period from November to March in the majority of regions of the state falls in the form of snow.

The most attractive combination of agroclimatic resources is, of course, characteristic of the North Caucasus, Central Black Earth and partly Volga economic regions. The indicator of the sum of temperatures of the growing season in the listed regions is 2200-3400 °C. The main territory is dominated by the sum of temperatures of 1000-2000 °C. This figure is considered below the level of profitable farming. This primarily applies to Siberia and the Far East, where the sum of temperatures is lion's share territory - 800-1500 °C.


On European territory, the isoline of temperature sums equal to 2000 °C runs along the line Smolensk - Moscow - Ivanovo - Ufa, and in Western Siberia it slid lower - to Chelyabinsk, Omsk and Barnaul, after which it resumed in the south Far East.

This type of resource includes such natural components as heat, moisture, light. The productivity of agricultural production and the efficiency of investments in this sector of the economy depend decisively on their presence. The agroclimatic resources of Russia create opportunities for the diversified development of agriculture in the republic. The vast expanse of Russia, where most of the country's population is concentrated, is located within the cold and temperate zone. However, the southern half of the country’s territory, lying in the subzone of mixed forests and in the forest-steppe zone, covering Central Russia, the south of Western Siberia and the Far East, has sufficient moisture and the sum of daily air temperatures (above +10 °C) is from 1600 to 2200 °C. Such agroclimatic conditions make it possible to grow wheat, rye, oats, flax, hemp, buckwheat, potatoes and vegetables, sugar beets and various feed crops(corn for feed, grain legumes) necessary for livestock farming.

The northern half of the country, including the taiga north of the Russian Plain and most of the Siberian and Far Eastern taiga, has sufficient, and in some places excessive, moisture. The sum of daily temperatures during the growing season fluctuates here between 1000–1600 °C, which makes it possible to grow rye, barley, legumes, flax, vegetables that require less heat (radishes, onions, carrots) and potatoes, herbs.

The least favorable agroclimatic conditions are in the Far North of Russia, where there is excess moisture and the sum of daily temperatures during the growing season is less than 1000 °C. In such conditions, only focal agriculture with the cultivation of crops that require little heat and greenhouse farming is possible.

The warmest part of Russia is the steppe regions of the southeast of the Russian Plain and the south of the West Siberian Plain, as well as the Ciscaucasia. Here, the sum of daily temperatures during the growing season is 2200–3400 °C, which ensures the ripening of winter wheat, corn for grain, millet, sugar beets, sunflowers, heat-loving vegetables and fruits. However, these areas have insufficient moisture, which requires watering and irrigation of the land in many places.


Conclusion

Coming to the conclusion of my work, I would like to say that in any case, natural resources are not unlimited and not eternal. This makes it necessary to constantly take care of their preservation and reproduction.
For this, the following basic conditions exist.

Firstly, it is necessary to carefully and rationally use what nature gives to humans (especially in relation to irreplaceable resources).

Secondly, where available, effective measures should be taken to replenish natural resources(to restore and increase the natural fertility of the land, to plant forests, to reproduce the reserves of reservoirs).

Thirdly, secondary raw materials and other production waste should be used as much as possible.

Fourthly, it is necessary to fully support the environmental cleanliness of production and environmental management.


Bibliography

1. Vavilova E.V. Economic geography and regional studies: Tutorial. – M.: Gardariki, 2004. – 148 p.

2. Gladky Yu.N., Dobrosyuk V.A., Semenov S.P. Economic geography of Russia: Textbook. M.: Gardarika, 1999.

3. Glushkova V.G., Makar S.V. Economics of environmental management: Textbook. M.: Gardarika, 2003.

4. Lagutenko B.T. Handbook of economic geography of Russia. M.: Yurist, 2001.

5. Economic and social geography of Russia. \Ed. prof. A.T. Khrushchev. M.: 1997

6. Economics\ Ed. can. economy Sciences, Associate Professor A.S. Bulatova. Publishing house BEK, M.: 1997

7. Russia: nature, population, economy. Encyclopedia. T. 12, M.: 1998

1. Agroclimatic resources are climate properties that provide opportunities for agricultural production. They are characterized by: the duration of the period with an average daily temperature above +10 °C; the sum of temperatures for this period; the ratio of heat and moisture (humidification coefficient); moisture reserves created in winter period snow cover.

Different parts of the country have different agro-climatic resources. In the Far North, where there is excessive moisture and little heat, only focal agriculture and greenhouse farming are possible. Within the taiga north of the Russian Plain and most of the Siberian and Far Eastern taiga it is warmer - the sum of active temperatures is 1000-1600 °, rye, barley, flax, and vegetables can be grown here. In the zone of steppes and forest-steppes of Central Russia, in the south of Western Siberia and the Far East, there is sufficient moisture, and the sum of temperatures is from 1600 to 2200 °, here you can grow rye, wheat, oats, buckwheat, various vegetables, sugar beets, and fodder crops for livestock needs.

The most favorable agroclimatic resources are the steppe regions of the southeast of the Russian Plain, the south of Western Siberia and the Ciscaucasia. Here the sum of active temperatures is 2200-3400°, and you can grow winter wheat, corn, rice, sugar beets, sunflowers, heat-loving vegetables and fruits.

2. The European part of Russia is located in the west of the country, stretching from its western borders to the Urals. The Asian part of Russia is located in the east of the country, stretches from the Urals to the Pacific Ocean and includes the vast expanses of Siberia and the Far East.

The area of ​​the Eastern zone is approximately 3 times larger than the Western zone, but its EGP is less profitable, since it is remote from the main economic centers of the country, European countries, and has weak land connections with other parts of the country. The eastern zone has access to the Pacific and Northern seas Arctic Oceans, is connected by waterways with the countries of the Asia-Pacific region, and the Western one goes to the seas of the Atlantic Ocean.

The Eastern zone is better provided with natural resources: it contains 80% of fuel, 75% of forest, 70% of water and 75% of hydropower resources. Only the Western zone is better supplied with iron ore. But the natural conditions in the east are less favorable (swamps, permafrost, harsh climate, mountainous terrain). Construction here costs 3-5 times more than in the west of the country. Average density The population of the Eastern zone is 12 times less than that of the Western zone. It is distributed much more unevenly, concentrating in the south of the zone, along the rivers and railways, vast areas are not inhabited at all.

The living conditions of people in the East are also more difficult; in addition to the harsh natural conditions, there is a lack of housing and poor living conditions. There are fewer cities here, there are only two millionaire cities, but the share of the urban population is higher due to the weak development of agriculture and the small number of people employed in it.

The basis of the economy of the Eastern zone is the mining industry. The bulk of oil, gas and coal is produced here. Agriculture is less developed, mainly in the south; it does not satisfy the food needs of the zone's population.

The role of the region in the country's economy is constantly increasing. In the 70-80s, the Eastern macroregion became the main fuel and energy base of the country, the main producer of aluminum, supplier of non-ferrous ores, rare metals, fish and forest products.

Manufacturing industry predominates in the west, and agriculture is much better developed than in the east. 4/5 of industrial and agricultural products, 9/10 of scientific products are produced here, and the bulk of banking capital is located here.

Such significant differences in the economy of the two zones are explained not only by differences in EGP and the characteristics of natural resources, but also by the peculiarities of the development of the country's territory - the western part of the country has historically been much better developed and populated.

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The rational organization of agricultural production as the main condition for solving the worsening food problem in the world is not possible without proper consideration of the climatic resources of the area.

The influence of climatic factors on the Russian economy

Climate elements such as heat, moisture, light and air, along with nutrients supplied from the soil, represent required condition plant life and, ultimately, the creation of agricultural products.

Therefore, agroclimatic resources are understood as climate resources in relation to agricultural needs.

Various climatic phenomena (thunderstorms, cloudiness, fog, snowfall, etc.) also have a certain effect on plants and are called environmental factors. Depending on the strength of this impact, plant vegetation is weakened or strengthened (for example, with strong winds, transpiration increases and the plants’ need for water increases, etc.).

Environmental factors become critical if they reach high intensity and pose a danger to plant life (for example, frost during flowering).

In such cases, these factors are subject to special consideration. Another regularity has been established: the existence of an organism is determined by the factor that is at a minimum (J. Liebig’s rule). These ideas are used to identify so-called limiting factors in specific territories.

Air. The air environment is characterized by a constant gas composition. Specific gravity components of nitrogen, oxygen, carbon dioxide and other gases vary little spatially, and therefore they are not taken into account when zoning.

Light. The factor that determines the energy basis of the entire diversity of plant life (germination, flowering, fruiting, etc.) is mainly the light part of the solar spectrum. Only in the presence of light does it appear and develop in plant organisms. the most important physiological process is photosynthesis.

Warm.

Each plant requires a certain minimum and maximum heat for its development. The amount of heat required to complete the vegetation cycle is called biological sum of temperatures . It is calculated as the arithmetic sum of average daily temperatures for the period from the beginning to the end of the plant’s growing season.

The temperature limit of the beginning and end of the growing season, or the critical level limiting the active development of the crop, is called biological zero or minimum. For different ecological groups of crops, the biological zero is not the same. For example, for most grain crops of the temperate zone (barley, rye, wheat, etc.) it is +5°C, for corn, buckwheat, legumes, sunflowers, sugar beets, for fruit shrubs and tree crops of the temperate zone +10°C, for subtropical crops (rice, cotton, citrus fruits) + 15°C.

To account for the thermal resources of the territory, it is used sum of active temperatures . This indicator was proposed in the 19th century.

by the French biologist Gasparin, but theoretically developed and refined by the Soviet scientist G. G. Selyaninov in 1930. It represents the arithmetic sum of all average daily temperatures for the period when these temperatures exceed a certain thermal level: +5, +10C.

To conclude about opportunities for crop growth in the study area, it is necessary to compare two indicators: the sum of biological temperatures, which expresses the plant’s need for heat, and the sum of active temperatures that accumulate in a given area. The first value must always be less than the second.

A feature of temperate plants (cryophiles) is their passage winter dormancy phases, during which plants need a certain thermal regime of air and soil layer.

Deviations from the required temperature range are unfavorable for normal vegetation and often lead to plant death.

An agroclimatic assessment of wintering conditions means taking into account adverse meteorological and weather phenomena during the cold season: severe frosts, deep thaws that cause soaking of crops; thick snow cover, under which the seedlings die out; ice, ice crust on stems, etc.

As an indicator of the severity of wintering conditions for plants, especially trees and shrubs, it is most often used the average of the absolute annual minimum air temperatures.

Moisture.

The most important factor in plant life is moisture. During all periods of life, a plant requires a certain amount of moisture for its growth, without which it dies. Water is involved in any physiological process associated with the creation or destruction of organic matter. It is necessary for photosynthesis, provides thermoregulation of the plant organism, and transports nutrients.

During normal vegetative development, cultivated plants absorb enormous volumes of water. Often, from 200 to 1000 mass units of water are consumed to form one unit of dry matter.

The theoretical and practical complexity of the problem of water supply to plants has led to the emergence of many methods and techniques for calculating its parameters.

In Soviet agroclimatology, several moisture indicators have been developed and used (N.N. Ivanova, G.T. Selyaninova, D.I. Shashko, M.I. Budyko, S.A. Sapozhnikova, etc.) and optimal formulas water consumption (I.A. Sharova, A. M. Alpatieva). Very widely used hydrothermal coefficient (HTC) – the ratio of the amount of precipitation for a certain period (month, growing season, year) to the amount of active temperatures for the same time, proposed in 1939

G.T. Selyaninov. Its use is based on a well-known assumption, empirically well confirmed: the sum of active temperatures, reduced by 10 times, is approximately equal to the evaporation value. Consequently, the HTC reflects the relationship between inflowing and evaporating moisture.

Assessment of moisture availability in the area for the growth of agricultural crops is based on the following decoding of the HTC values: less than 0.3 - very dry, from 0.3 to 0.5 - dry, from 0.5 to 0.7 - dry, from 0.7 to 1.0 - insufficient moisture, 1.0 - equality of moisture inflow and consumption, from 1.0 to 1.5 - sufficient moisture, more than 1.5 - excessive moisture (Agroclimatic Atlas of the World, 1972, p.

In foreign agroclimatic literature, many indicators of territory moisture are also used - the indices of K. Thornthwaite, E. De Martonne, G. Walter, L. Emberge, W. Lauer, A. Penk, J. Mohrmann and J. Kessler, X. Gossen , F. Banyulya and others. All of them, as a rule, are calculated empirically, therefore they are valid only for areas limited in area.

Education

Agroclimatic resources of the Earth

Possession of rich soil and agroclimatic resources in modern world becomes one of the key factors for sustainable development in the long term. In conditions of increasing overpopulation in some countries, as well as stress on soils, water bodies and the atmosphere, access to sources of quality water and fertile soil is becoming a strategically important advantage.

Regions of the world.

Agroclimatic resources

It is obvious that soil fertility, the number of sunny days per year, and water are distributed unevenly on the surface of the planet. While some regions of the world suffer from a lack of sunlight, others experience an excess solar radiation and constant droughts.

In some areas, devastating floods regularly occur, destroying crops and even entire villages.

It is also worth considering that soil fertility is far from a constant factor, which can vary depending on the intensity and quality of exploitation.

Soils in many regions of the planet tend to degrade, their fertility decreases, and over time erosion makes productive agriculture impossible.

Heat as the main factor

Speaking about the characteristics of agroclimatic resources, it’s worth starting with temperature regime, without which the growth of agricultural crops is impossible.

In biology, there is such a thing as “biological zero” - this is the temperature at which a plant stops growing and dies.

This temperature is not the same for all crops. For most crops that are grown in middle lane Russia, this temperature is approximately +5 degrees.

It is also worth noting that the agroclimatic resources of the European part of Russia are rich and diverse, because a significant part of the central European region of the country is occupied by black soil, and water and sun are abundant from spring to early autumn.

In addition, heat-loving crops are cultivated in the south and along the Black Sea coast.

Video on the topic

Water resources and ecology

Considering the level of industrial development, increasing pollution environment, it is worth talking not only about the quantity of agroclimatic resources, but also about their quality. Therefore, territories are divided according to the level of heat supply or the presence of large rivers, as well as the ecological cleanliness of these resources.

For example, in China, despite significant water reserves and large areas farmland, talk about the full security of this populous country the necessary resources are not available, because the aggressive development of the manufacturing and mining industries has led to the fact that many rivers are polluted and unsuitable for the production of quality products.

At the same time, countries such as Holland and Israel, having small territories and difficult climatic conditions, are becoming leaders in food production.

And Russia, as experts note, is far from taking full advantage of the advantages of the temperate zone, in which a significant part of the country’s European territory is located.

Technology at the service of agriculture

How more people inhabit the Earth, the more pressing the problem becomes of feeding the inhabitants of the planet.

The load on soils is growing, they are degrading, and the area under cultivation is decreasing.

However, science does not stand still, and after the Green Revolution, which made it possible to feed a billion people in the middle of the last century, a new one is coming. Considering that the main agroclimatic resources are concentrated on the territory of such large states as Russia, the USA, Ukraine, China, Canada and Australia, more and more small states are using modern technologies, become leaders in agricultural production.

Thus, technologies make it possible to compensate for the lack of heat, moisture or sunlight.

Resource Allocation

Soil and agroclimatic resources are distributed unevenly across the Earth. In order to indicate the level of resource provision in a particular region, to the most important criteria assessments of the quality of agroclimatic resources include heat.

On this basis, the following climate zones are determined:

  • cold - heat supply less than 1000 degrees;
  • cool - from 1000 to 2000 degrees during the growing season;
  • moderate - in the southern regions the heat supply reaches 4000 degrees;
  • subtropical;
  • hot.

Taking into account the fact that natural agroclimatic resources are distributed unequally on the planet, in conditions modern market all states have access to agricultural products, no matter in which region they are produced.

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The agro-industrial complex (AIC) is of key importance in the global economy. It is one of the most important national economic complexes that determine the basic conditions for ensuring the life of society. Its significance is not only in meeting people’s food needs, but also in the fact that it significantly affects employment and the efficiency of all national production.

The agro-industrial complex is the largest of the main (basic) complexes in the country’s global economy. It includes all types of production and production services, the creation and development of which are subordinated to the production of final consumer products from agricultural raw materials.
One of the key factors in the development of the agro-industrial complex is the climatic resources of a particular region, which influence the suitability of natural conditions for growing any agricultural crops.

Agroclimatic resources are climate properties that provide opportunities for agricultural production.
The key indicators of agroclimatic resources are: the duration of the period with an average daily temperature above 10 degrees; the sum of temperatures for this period;
moisture coefficient;
thickness and duration of snow cover.

The rational organization of agricultural production as the main condition for solving the worsening food problem in the world is impossible without proper consideration of the climatic resources of the area. Climate elements such as heat, moisture, light and air, along with nutrients supplied from the soil, are a prerequisite for plant life and, ultimately, the creation of agricultural products.

Therefore, agroclimatic resources are understood as climate resources in relation to agricultural needs. Air, light, heat, moisture and nutrients are called the life factors of living organisms. Their combination determines the possibility of vegetation of plant or vital activity of animal organisms.

The absence of at least one of the factors of life (even in the presence of optimal options for all others) leads to their death.

Various climatic phenomena (thunderstorms, cloudiness, winds, fogs, snowfalls, etc.) also have a certain effect on plants and are called environmental factors. Depending on the strength of this effect, plant vegetation is weakened or strengthened (for example, with strong winds, transpiration increases and the plant’s need for water increases, etc.).

Environmental factors become critical if they reach a high intensity and pose a danger to plant life (for example, frost during flowering). In such cases, these factors are subject to special consideration. These ideas are used to identify so-called limiting factors in specific territories. Air, The air environment is characterized by a constant gas composition. The specific gravity of the components - nitrogen, oxygen, carbon dioxide and other gases - varies little spatially and, therefore, when zoning, they are not taken into account.

Oxygen, nitrogen and carbon dioxide (carbon dioxide) are especially important for the life of living organisms.

Light. The factor that determines the energy basis of the entire diversity of plant life (their germination, flowering, fruiting, etc.) is mainly the light part of the solar spectrum. Only in the presence of light does the most important physiological process, photosynthesis, arise and develop in plant organisms.

The part of the solar spectrum directly involved in photosynthesis is called photosynthetically active radiation (PAR). Organic matter created by absorbing PAR during photosynthesis makes up 90-95% of the dry mass of the crop, and the remaining 5-10% is formed due to mineral soil nutrition, which also occurs only simultaneously with photosynthesis.

When assessing light resources, the intensity and duration of illumination (photoperiodism) are also taken into account.

Warm. Each plant requires a certain minimum and maximum heat for its development. The amount of heat required by plants to complete the vegetation cycle is called the biological sum of temperatures. It is calculated as the arithmetic sum of average daily temperatures for the period from the beginning to the end of the plant’s growing season.

The temperature limit of the beginning and end of the growing season, or the critical level limiting the active development of crops, is called biological zero or minimum.

For different ecological groups of crops, the biological zero is not the same. For example, for most grain crops of the temperate zone (barley, rye, wheat, etc.) it is +5°C, for corn, buckwheat, legumes, sunflowers, sugar beets, for fruit shrubs and tree crops of the temperate zone +10°C, for subtropical crops (rice, cotton, citrus fruits) +15°C.

To account for the thermal resources of a territory, the sum of active temperatures is used.

This indicator was proposed in the 19th century. by the French biologist Gasparin, but theoretically developed and refined by the Soviet scientist G. T. Selyaninov in 1930. It is the arithmetic sum of all average daily temperatures for the period when these temperatures exceed a certain thermal level: +5, + 10 ° C.

To draw a conclusion about the possibility of growing a crop in the studied area, it is necessary to compare two indicators: the sum of biological temperatures, which expresses the plant’s need for heat, and the sum of active temperatures that accumulate in a given area. The first value must always be less than the second.

A feature of plants in the temperate zone (cryophiles) is that they go through a winter dormancy phase, during which the plants need a certain thermal regime of the air and soil layer. Deviations from the required temperature range are unfavorable for normal vegetation and often lead to plant death. An agroclimatic assessment of wintering conditions means taking into account adverse meteorological and weather phenomena during the cold season: severe frosts, deep thaws that cause soaking of crops; thick snow cover, under which the seedlings die out; ice, ice crust on stems, etc.

Both the intensity and duration of the observed phenomena are taken into account.

Moisture. The most important factor in plant life is moisture. During all periods of life, a plant requires a certain amount of moisture for its growth, without which it dies. Water is involved in any physiological process associated with the creation or destruction of organic matter. It is necessary for photosynthesis, provides thermoregulation of the plant organism, and transports nutrients.

During normal vegetative development, cultivated plants absorb enormous volumes of water. Often, to form one unit of dry matter, from 200 to 1000 mass units of water are consumed (B. G. Rozanov, 1984).

Based on the analysis of factors, a comprehensive agroclimatic zoning of the area is carried out.

Agroclimatic zoning is the division of a territory (at any level) into regions that differ in the conditions of growth, development, overwintering and production of food.

whole cultivated plants.

When classifying the agroclimatic resources of the world at the first level, differentiation of the territory is carried out according to the degree of heat supply, in other words, according to macro-differences in thermal resources.

Based on this feature, thermal zones and sub-belts are distinguished; the boundaries between them are drawn conditionally - along isolines certain values sums of active temperatures above +10°C.

Cold belt. The sum of active temperatures does not exceed 1000°. These are very small heat reserves; the growing season lasts less than two months. Since even at this time temperatures often drop below zero, farming in open ground is impossible. The cold belt occupies vast areas in northern Eurasia, Canada and Alaska.

Cool belt. Heat supply increases from 1000° in the north to 2000° in the south. The cool belt extends in a fairly wide strip to the south of the cold belt in Eurasia and North America and forms a narrow zone in the southern Andes in South America.

Insignificant heat resources limit the range of crops that can grow in these areas: these are mainly early-ripening, undemanding plants that can tolerate short-term frosts, but are light-loving (long-day plants).

These include gray breads, vegetables, some root vegetables, early potatoes, and special polar types of wheat. Agriculture is of a focal nature, concentrating in the warmest habitats. The general lack of heat and (most importantly) the danger of late spring and early autumn frosts reduce the possibilities of crop production. Arable lands in the cool zone occupy only 5-8% of the total land area.

Temperate zone. The heat supply is at least 2000° in the north of the belt and up to 4000° in the southern regions. The temperate zone occupies vast territories in Eurasia and North America: it includes all of foreign Europe' (without the southern peninsulas), most of the Russian Plain, Kazakhstan, southern Siberia and the Far East, Mongolia, Tibet, northeastern China, the southern regions of Canada and the northern regions USA.

On the southern continents, the temperate zone is represented locally: this is Patagonia in Argentina and a narrow strip of the Chilean Pacific coast in South America, the islands of Tasmania and New Zealand.

In the temperate zone, differences in the seasons of the year are pronounced: there is one warm season, when plant growth occurs, and one period of winter dormancy.

The duration of the growing season is 60 days in the north and about 200 days in the south. The average temperature of the warmest month is not lower than +15°C; winters can be very severe or mild, depending on the degree of continental climate. The thickness of the snow cover and the type of overwintering of cultivated plants vary in a similar way. The temperate zone is a zone of mass agriculture; arable lands occupy almost all the space suitable for the relief conditions.

The range of cultivated crops is much wider, all of them are adapted to the thermal regime of the temperate zone: annual crops quite quickly complete their vegetation cycle (in two to three summer months), and perennial or winter species necessarily go through the vernalization or vernalization phase, i.e.

winter dormancy period. These plants are classified as a special group of cryophilic crops. These include the main grain cereals - wheat, barley, rye, oats, flax, vegetables, and root vegetables. There are large differences between the northern and southern regions of the temperate zone in the total heat reserves and in the duration of the growing season, which makes it possible to distinguish two sub-zones within the zone:

Typically moderate, with thermal resources from 2000 to 3000°.

Mostly long-day, early-ripening plants that require little heat grow here (rye, barley, oats, wheat, vegetables, potatoes, grass mixtures, etc.).

It is in this sub-zone that the share of winter crops in the crops is high.

Warm-temperate zone, with sums of active temperatures from 3000 to 4000°. A long growing season, during which a lot of heat accumulates, allows you to grow late-ripening varieties cereals and vegetable crops; Corn, rice, sunflowers, grapevines, and many fruit and fruit tree crops successfully grow here.

It becomes possible to use intercrops in crop rotations.

Warm (or subtropical) zone. The sums of active temperatures range from 4000° on the northern border to 8000° on the southern border. Territories with such heat supply are widely represented on all continents: the Eurasian Mediterranean, Southern China, the predominant part of the United States and Mexico, Argentina and Chile, the south of the African continent, the southern half of Australia.

Heat resources are very significant, but in winter average temperatures (albeit positive) do not rise above +10°C, which means a suspension of the growing season for many overwintering crops. The snow cover is extremely unstable; in the southern half of the belt, vegetative winters are observed, and snow may not fall at all.

Thanks to the abundance of heat, the range of cultivated crops is greatly expanded due to the introduction of subtropical heat-loving species, and it is possible to cultivate two harvests per year: annual crops of the temperate zone in the cold season and perennial, but cryophilic species of the subtropics (mulberry, tea bush, citrus fruits, olive, Walnut, grapes, etc.).

In the south, annuals of tropical origin appear, requiring high temperatures and intolerant of frost (cotton, etc.).

Differences (mainly) in mode winter season(presence or absence of growing winters) allows us to divide the territories of the warm zone into two sub-belts with their own specific sets of crops: moderately warm with sums of active temperatures from 4000 to 6000 ° and with cool winters and a typically warm sub-belt with a heat supply of the order of 6000 - 8000 °, with predominantly growing winters (average January temperatures are above +10°C).

Hot belt. Heat reserves are practically unlimited; they everywhere exceed 8000°, sometimes more than 10,000°. Geographically, the hot zone occupies the most extensive land areas of the globe. It includes most of Africa, most of South America, Central America, all of South Asia and the Arabian Peninsula, the Malay Archipelago and the northern half of Australia.

In the hot zone, heat ceases to play the role of a limiting factor in the placement of crops. The growing season lasts all year round; the average temperature of the coldest month does not fall below +15°C. The range of cultivated plants possible for cultivation is replenished with species of tropical and equatorial origin (coffee and chocolate trees, date palm, bananas, cassava, sweet potato, cassava, cinchona, etc.). The high intensity of direct solar radiation is destructive for many cultivated plants, so they are grown in special multi-tiered agrocenoses, under the shade of specially left single specimens of tall trees.

The absence of a cold season prevents the successful growing season of cryogenic crops, so plants in the temperate zone can grow only in high mountain areas, i.e.

almost outside the boundaries of the hot zone.

At the second level of agroclimatic zoning of the world, thermal zones and sub-zones are divided based on differences in annual moisture regimes.

A total of 16 areas with different values ​​of the growing season moisture coefficient are identified:

Excessive moisture during the growing season;

2. Sufficient moisture during the growing season;

3. Dry growing season;

4. Dry growing season (probability of droughts more than 70%);

5. Dry throughout the year (the amount of annual precipitation is less than 150 mm. HTC for the growing season is less than 0.3);

6. Sufficient moisture throughout the year;

7. Sufficient or excessive moisture in summer, dry winter and spring (monsoon climate);

8„ Sufficient or excessive moisture in winter, dry summer (Mediterranean climate type);

AGROCLIMATIC RESOURCES – climate properties that provide

Sufficient or excessive moisture in winter, dry summers (Mediterranean climate type);

10. Insufficient moisture in winter, dry and arid summers;

11. Excessive moisture most of the year with 2-5 dry or dry months;

12. Dry most of the year with sufficient moisture for 2-4 months;

Dry most of the year with excess moisture for 2-5 months;

14. Two periods of excess moisture with two dry or arid periods;

15. Excessive moisture throughout the year;

16. The temperature of the warmest month is below 10 C (humidification conditions are not assessed).

In addition to the main indicators, the classifications also take into account the most important agroclimatic phenomena of a regional nature (wintering conditions for cryophilic crops, frequency of occurrence of adverse events - droughts, hail, floods, etc.).

continuation

Agroclimatic resources are climate properties that provide the possibility of agricultural production: light, heat and moisture.

Climate properties

These properties largely determine the placement of crop production. The development of plants is favored by sufficient lighting, warm weather, and good moisture.

The distribution of light and heat is determined by the intensity of solar radiation.

In addition to the degree of illumination, the length of daylight hours affects the placement of plants and their development. Long-day plants - barley, flax, oats - require longer light hours than plants short day- corn, rice, etc.

The most important factor for plant life is air temperature.

Basic life processes in plants occur in the range from 5 to 30 °C. The transition of the average daily air temperature through 0 °C when it rises indicates the beginning of spring, and when it decreases, it indicates the onset of a cold period. The interval between these dates is the warm period of the year. A frost-free period is a period without frost. The growing season is the period of the year from stable temperature air above 10 °C. Its duration approximately corresponds to the frost-free period.

The sum of temperatures during the growing season is of great importance.

It characterizes heat resources for agricultural crops. In Russian conditions, this indicator in the main agricultural areas is in the range of 1400-3000 °C.

An important condition for plant growth is sufficient quantity moisture in the soil.

The accumulation of moisture depends mainly on the amount of precipitation and its distribution throughout the year. Precipitation from November to March falls in the form of snow in most parts of the country.

Their accumulation creates a snow cover on the soil surface. It provides a supply of moisture for plant development and protects the soil from freezing.

The best combination of agroclimatic resources was formed in the Central Black Earth, North Caucasus and partly in the Volga economic regions. Here, the sum of temperatures during the growing season is 2200-3400 °C, which makes it possible to grow winter wheat, corn, rice, sugar beets, sunflowers, heat-loving vegetables and fruits.

The main territory of the country is dominated by temperatures ranging from 1000 to 2000 °C, which by world standards is considered below the level of profitable agriculture.

This applies primarily to Siberia and the Far East: here the sum of temperatures in most of the territory ranges from 800 to 1500 °C, which almost completely excludes the possibility of cultivating agricultural crops. If the isoline of temperature sums of 2000 °C on the European territory of the country runs along the line Smolensk - Moscow - Nizhny Novgorod- Ufa, then in Western Siberia it descends further south - to Kurgan, Omsk and Barnaul, and then appears only in the south of the Far East, in a small territory of the Amur region, the Jewish Autonomous Region and the Primorsky Territory.

Agroclimatic resources of Russia Wikipedia
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The Ryazan region is considered a risky farming zone. Nevertheless, modern technologies, combined with people’s love of work, bear fruit. This can be seen in the example of the collective farm named after. Lenin in the Kasimovsky district of the region.

Operating for more than 30 years, the farm is engaged in growing potatoes and grain and raising livestock. total area farmland is over 7 thousand.

hectares, of which arable land - ​about 6 thousand hectares.

The collective farm employs 330 people. The cattle population is more than 3,000 heads, of which about 1,500 are cows. There are 14 settlements in the area where the farm operates.
The main criterion for the operation of the farm is the environmental friendliness of the products.

To achieve this, workers use a scientific approach and the most modern technology. For many years, the Lenin collective farm has been one of the best potato farms in our country. And in terms of livestock farming in the region, they have no equal.

the farm has the status of a breeding plant with high quality genetic material of the herd. Last year, according to the Ministry of Agriculture of the Ryazan Region, the collective farm named after. Lenin is recognized as the most efficient farm in the region. The farm won the ranking in terms of productivity, the yield per head of feed was 9505 kg per year, or 26 liters per day. The high rates are the result of many years of work by the farm’s breeders, say ministry officials.

It is especially emphasized that imported cattle have never been brought here. In 2017, the daily milk yield on the collective farm named after. Lenin reached 40 tons of milk per day.

The farm has installed a robotic complex for 300 heads of cattle, and plans to open a complex for another 400 heads and create its own low-capacity milk processing facility.

As they say local residents, the success of the enterprise is largely due to the personality of the leader.

Honored Worker of Agriculture Russian Federation Tatyana Naumova has been heading the company since its inception.

It is thanks to her enthusiasm and perseverance that the most modern technologies and the highest production standards are being introduced into the farm. In addition to purely production activities, the farm also carries out extensive social work. Over the past seven years, more than 60 houses, a first aid station, playground, the kindergarten was reconstructed.

At the same time, the agricultural enterprise traditionally takes on a significant portion of the preparation costs. project documentation and construction organization. As a deputy of the Kasimovsky District Duma, Tatyana Mikhailovna also resolves many everyday issues of the residents of the district. In a word, the collective farm named after. Lenin proves in practice that patience and work will grind everything down.

Even in the area of ​​risky farming.

391359; Ryazan region, Kasimovsky district, village. Torbaevo, phone: (49131) 4‑72‑55, e-mail: [email protected], www.kolxoz-lenina.ru

This type of resource includes such natural components as heat, moisture, light. The productivity of agricultural production and the efficiency of investments in this sector of the economy depend decisively on their presence. The agroclimatic resources of Russia create opportunities for the diversified development of agriculture in the republic. The vast expanse of Russia, where most of the country's population is concentrated, is located within the cold and temperate zone. However, the southern half of the country’s territory, lying in the subzone of mixed forests and in the forest-steppe zone, covering Central Russia, the south of Western Siberia and the Far East, has sufficient moisture and the sum of daily air temperatures (above +10 °C) is from 1600 to 2200 °C. Such agroclimatic conditions make it possible to grow wheat, rye, oats, flax, hemp, buckwheat, potatoes and vegetables, sugar beets and various feed crops (corn for feed, grain legumes) necessary for livestock farming.

The northern half of the country, including the taiga north of the Russian Plain and most of the Siberian and Far Eastern taiga, has sufficient, and in some places excessive, moisture. The sum of daily temperatures during the growing season fluctuates here between 1000–1600 °C, which makes it possible to grow rye, barley, legumes, flax, vegetables that require less heat (radishes, onions, carrots) and potatoes, herbs.

The least favorable agroclimatic conditions are in the Far North of Russia, where there is excess moisture and the sum of daily temperatures during the growing season is less than 1000 °C. In such conditions, only focal agriculture with the cultivation of crops that require little heat and greenhouse farming is possible.

The warmest part of Russia is the steppe regions of the southeast of the Russian Plain and the south of the West Siberian Plain, as well as the Ciscaucasia. Here, the sum of daily temperatures during the growing season is 2200–3400 °C, which ensures the ripening of winter wheat, corn for grain, millet, sugar beets, sunflowers, heat-loving vegetables and fruits. However, these areas have insufficient moisture, which requires watering and irrigation of the land in many places.


Conclusion

Coming to the conclusion of my work, I would like to say that in any case, natural resources are not unlimited and not eternal. This makes it necessary to constantly take care of their preservation and reproduction.
For this, the following basic conditions exist.

Firstly, it is necessary to carefully and rationally use what nature gives to humans (especially in relation to irreplaceable resources).

Secondly, where available, effective measures should be taken to replenish natural resources (restoring and increasing the natural fertility of the land, planting forests, replenishing reservoirs).

Thirdly, secondary raw materials and other production waste should be used as much as possible.

Fourthly, it is necessary to fully support the environmental cleanliness of production and environmental management.


Bibliography

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2. Gladky Yu.N., Dobrosyuk V.A., Semenov S.P. Economic geography of Russia: Textbook. M.: Gardarika, 1999.

3. Glushkova V.G., Makar S.V. Economics of environmental management: Textbook. M.: Gardarika, 2003.

4. Lagutenko B.T. Handbook of economic geography of Russia. M.: Yurist, 2001.

5. Economic and social geography of Russia. \Ed. prof. A.T. Khrushchev. M.: 1997

6. Economics\ Ed. can. economy Sciences, Associate Professor A.S. Bulatova. Publishing house BEK, M.: 1997

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