Effects of land-use changes on soil erosion in Ten Tributaries of the Yellow River Basin
The situation of soil erosion at Ten Tributaries of the upper Yellow River is complex due to the coexist of hydraulic erosion with wind erosion,and thereby floods with high peaks and high sediment concentration tend to flow into the Yellow River during the rainy season.The effects of land use changes on soil erosion in Ten Tributaries of the upper Yellow River from 1990 to 2015 were analyzed by using the Revised Universal Soil Loss Equation(RUSLE)model and GIS spatial analysis technology.The results show that:from 1990 to 2015,especially after 2000,the area of forestland in the study area increased significantly,from 21 765 ha to 240 280 ha,the area of grassland increased slightly from 537 623 ha to 582 369 ha and then decreased to 509 599 ha,the soil erosion module sharply decreased from 18.43 t to 2.01 t per hectare per year,and the soil erosions were mainly in slight and light level.This indicates that the soil erosion situation in the Ten Tributaries area has improved significantly,especially after 2000,with the large-scale ecological engineering playing a significant role in regional soil erosion control.
Yellow River basinTen Tributariesland useRUSLE modelsoil erosion
国家科技期刊平台
NSTL
万方数据
维普
