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Geography and Natural Resources

2021 year, number 2

AGRO-CLIMATIC ZONING OF RUSSIA AND KAZAKHSTAN UNDER CURRENT CLIMATE CHANGE

D.E. MINGALEV
Institute of Earth Sciences, St. Petersburg State University, 190000, St. Petersburg, Desyataya liniya Vasil’eveskogo ostrova, 33-35, Russia, 190000, Russia
Keywords: climate warming, sum of active temperatures, agro-climatic zones, updating of climate maps, subtropical zone

Abstract

This article considers the problem of updating the maps of the agro-climatic zones of Russia and Kazakhstan, taking into account current climate warming. Agro-climatic zoning of a territory is one of the most important parameters of agro-climatic support of the economy; however, the problem of creating modern specialized maps on this topic and updating climate standards in Russia and Kazakhstan remains. Regional studies of the last few years on climatology and adaptation of agriculture to climate warming directly or indirectly indicate the need for updating climate standards and reference material (maps, diagrams, textbooks, etc.). In the course of this study, the sum of active temperatures (ST10) was calculated for 270 meteorological stations in Russia, Kazakhstan and adjacent territories for the period 2001-2018. The results obtained recorded a noticeable shift in the boundaries of agro-climatic zones and an increase in ST10 by 200-600 °C depending on a specific territory as compared with data from the 1950s-1960s. The agro-climatic zones to the greatest extent shifted in 1600-2200 and 2200-2800 °C, but Kamchatka, the Aral Sea region and the Syr Darya basin are dominant in absolute value. The subtropical zone also expanded significantly beyond the Black Sea coast of Krasnodar krai, the southern coast of the Crimea and the extreme south of the Turkistan Region. The above information partially confirmed the forecast of Roshydromet in 2005, although in many regions of Russia the trend for ST10 to increase was slightly weaker than expected.