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Recent trend of erosion rates in the southern half of the Russian plainстатья Исследовательская статья
- Авторы: Golosov V.N., Litvin L.F., Сhizhikova N.A., Kiryukhina Z.P., Safina G.R.
- Сборник: Soil and water resources protection in the changing environment
- Серия: Advances in Geoecology
- Том: 45
- Год издания: 2018
- Издательство: CATENA Verlag
- Местоположение издательства: Germany
- Первая страница: 54
- Последняя страница: 64
- Аннотация: The territory of the Russian Plain can be divided onto two parts in relation of agricultural activity. The northern half is taiga zone with extremely high proportion of forested area and very limited areas of arable fields. Southern half of the Russian Plain is located in broad-leaf forest, forest-steppe and steppe zones and it is characterized by high proportion of arable lands with period of intensive cultivation from 300-350 years in broad-leaf landscape zone up to about one century on the south-east of steppe zone. It is one of the main agricultural regions of Russia with relatively high rates of sheet, rill and gully erosion. The latest quantitative assessment of soil losses for the entire area of the Russian Plain was undertaken in the middle of 1980th, when maps of soil losses and gully density were constructed. Modified version of USLE model and State Hydrological Institute erosion model were used for evaluation of soil losses from arable lands during warm period of year and period of snow-melting respectively. Active gully headcuts were identified by using large scale maps combine with using aerial photographs. Land use transformation, climate changes and crop rotation modification during last 25-35 years lead to changes of soil erosion rates in different parts of studied area. Complex approach is applied for assessment of recent trends of sheet, rill and gully erosion in different landscape zones of study area. Investigations is undertaken in 6 selected sectors (area of each sector is about 6-10 thousand km2), uniformly distributed over the area of the Southern half of the Russian Plain. Changes of the different factors, including some meteorological and hydrological parameters, land use, USLE C-factor, were determined for the period 1990-2014. Contribution of each from above mention factors on erosion rate trend changes is different in the different landscape zones of the study area. It was found, that decreasing of surface runoff from cultivated slope during snow-melting is the main driver of the reduction of the gully headcut retreat rate as well as sheet and rill erosion.
- Добавил в систему: Голосов Валентин Николаевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | CATENA_VERLAG_ADVANCES_IN_GEOECOLOGY_45.pdf | CATENA_VERLAG_ADVANCES_IN_GEOECOLOGY_45.pdf | 380,7 КБ | 23 мая 2018 [Golosov] |