Advance in researches on vegetation cover and management factor in the soil erosion prediction model

Abstract

Abstract: Vegetation cover and land management are the main limiting factors of soil erosion,and quantitative evaluation on the effect of different vegetation on soil erosion is essential to land use and soil conservation planning. The vegetation cover and management factor (C) in the universal soil loss equation (USLE) is an index to evaluate this effect,which has been studied deeply and used widely. However, the Cfactor study is insufficient in China. In order to strengthen the research of C factor, this paper reviewed the developing progress of Cfactor,and compared the methods of estimating C value in different USLEversions. The relative studies in China were also summarized from the aspects of vegetation canopy coverage, soil surface cover, and root density. Three problems in C factor study were pointed out.The autors suggested that cropland C factor research should be furthered,and its methodology should be unified in China to represent reliable Cvalues for soil loss prediction and conservation planning.

Key words: Soil erosion prediction, Universal soil loss equation(USLE), Vegetation cover, Management factor

CLC Number:

S157.4

ZHANG Yan, YUAN Jianping, LIU Baoyuan . Advance in researches on vegetation cover and management factor in the soil erosion prediction model[J]. Chinese Journal of Applied Ecology, 2002, (8): 1033-1036.

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