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The agrogene transformation of steppe-forest landscapes of Central Russian Uplandтезисы доклада
- Авторы: Козлов Д.Н., Лозбенев Н.И.
- Сборник: Book of abstracts of International Geographical Union Regional Conference “Geography, Culture and Society for Our Future Earth”, 17–21 August 2015, Moscow, Russia
- Серия: Thematic Session "Cultural Regionalism and Regional Identity"
- Тезисы
- Год издания: 2015
- Издательство: Izdatel'stvo Moskovskogo Gosudarstvennogo Universiteta im.M.V.Lomonosova/Publishing House of Moscow State University
- Местоположение издательства: Russian Federation
- Первая страница: 168
- Последняя страница: 168
- Аннотация: During centuries, Russian chernosems and steppe-forest landscapes are under agrogene pressure. The aim of this research is to provide science-based estimation of their transformation. Two landscapesanalogs in Kurskaya region were taken for this. First of them is an old farmland and the second is virgin steppe. Because of changed vegetation comparison of landscapes can be provided by comparison of soil properties. First of all, the morphological structure of the study regions was described and it was found, that agricultural activity causes its simplification. Basing on standard methods, soil samples were taken for analysis. Bulk density and humus content were identified for them. Then comparison of soil profiles was provided for detection of main factors of humus and bulk density differentiation in soil profile. It was found, that humus content in arable horizon (0-30 cm) decreased to 5-6% in agricultural landscapes in comparison with 10-12% in virgin landscapes. Moreover humus stock decreased from 600-700 t/ga to 400-500 t/ga. Basing on detailed digital elevation model modelling humus stock and soil organic carbon (SOC) stock for two territories-analogs was modeled. Methods of linear regression analyzing and nonlinear general classification (regression tree models) were used for it. As a result, we got models of humus and SOC stock for layer 0-100 cm, 0-50 cm and for each 10 cm. Then the comparison of SOC stock in 2 areas was provided for correct explanation of soil and landscape changes under the anthropogenic treat.
- Добавил в систему: Козлов Даниил Николаевич