Monday, August 22, 2016

The researchers assessed the rate of soil erosion in Russia – BBC

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The Russian scientists as part of an international research team found both in the rate of formation of gullies can judge of soil erosion and global climate. The results of the published in the high Earth Sciences Review Journal. Research supported by the grant of the Russian Science Foundation (RNF).

«The article prepared in collaboration with a group of foreign researchers, summarized the results of observations of the growth of gullies in different countries, including Russia. The data on the dynamics of gullies growth is a reliable indicator of ongoing global climate change and the impact of these changes on the development of soil degradation processes in different landscape zones, “- says the doctor of geographical sciences, leading researcher of Landscape Ecology Department Officer Institute of Ecology and Environmental Sciences at Kazan Federal University Valentin votes, Now abideth field work in the Orenburg region.

The project RNF scientists are exploring the effects of climate change and land use on soil degradation. Gully erosion (erosion of loose sediments of water) is one of the processes leading to degradation. Since gullies most clearly expressed in the relief, changes in the rate of growth in length is one of the reliable indicators of an increase or reduction in the rate of soil erosion

The trend is obtained as follows:. The general warming of the European territory of Russia contributes to the growth rate of flushing the warm season by increasing the number of heavy rain (with a layer of precipitation over 10 mm), but sharply reduced the pace of growth flush slopes and ravines during the spring snow melt due to decrease in surface runoff water from the slopes.

in the studied regions (except Ciscaucasia) scientists has been a significant slowdown in the erosion and, consequently, an increase in areas suitable for agricultural land, which is mainly due to the climate, not man-made factors.

The paper used analysis of climatic factors, interpretation of aerial photographs, construction and analysis of digital elevation models, conversion of intensive formation of gullies and soil erosion, radioisotope methods. Along with gully erosion authors estimate the trends and changes in the rate of tall storm washes over the last 35-40 years. In the first year of research on the subject of the grant RNF of growth gully monitoring network is organized in six regions of the European part of Russia – Udmurtia, Tatarstan, Voronezh, Saratov and Orenburg regions, the Stavropol Territory

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