Title: Monitoring Results of Soil Loss in Karst Slopes
Abstract: Experiments on monitoring surface runoff,suspensional sediment yield and soil loss for each rainfall event was carried out in six runoff fields with different land use types,using large slope runoff field method,in Chenqi catchment,from July,2007 to Dec,2008.Results show that annual soil loss and suspensional sediment yield in six runoff fields vary greatly,from 0.05 to 62.25 t/km2 and 0.03~8.68 t/km2,the largest one occurs in the sparse shrubs runoff field which classified as moderate rocky desertification.Soil loss in karst slopes generally occurs in heavy rainstorms when the precipitation exceeds 60mm,and the surface runoff is the dominating factor;however,the soil loss also being affected by rainfall characteristic and vegetation cover.Moreover,antecedent precipitation influence the surface runoff and soil loss significantly in karst slopes;Surface runoff,soil loss and suspensional sediment yield for each rainfall event in agriculture and sparse shrubs runoff fields,show significant increases in such case,comparing with runoff fields with complex vegetation,burned area,shrub-grass and young forest.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 10
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