摘要
Based on the measured data and the model of plotted watershed hydrology, the benefit of sediment reduction by biological harnesses of soil and water conservation was studied in the watershed scale. The result indicated that the erosion modulus in Wangdonggou watershed, which were 1869t·km -2 , 1050t·km -2 , 383t·km -2 , and 504t·km -2 in the periods of the sixth, seventh, eighth, and ninth five year plans, respectively, were gradually reduced by comprehensive measures. Taken out the effect of rainfall, the sediment reduction by biological measures of soil and water conservation was increased by 24.1% and 22.4% in the periods of eighth and ninth five year plans compared to that in the seventh five year plan.
Based on the measured data and the model of plotted watershed hydrology, the benefit of sediment reduction by biological harnesses of soil and water conservation was studied in the watershed scale. The result indicated that the erosion modulus in Wangdonggou watershed, which were 1869t·km -2 , 1050t·km -2 , 383t·km -2 , and 504t·km -2 in the periods of the sixth, seventh, eighth, and ninth five year plans, respectively, were gradually reduced by comprehensive measures. Taken out the effect of rainfall, the sediment reduction by biological measures of soil and water conservation was increased by 24.1% and 22.4% in the periods of eighth and ninth five year plans compared to that in the seventh five year plan.
出处
《应用生态学报》
CAS
CSCD
2002年第5期635-637,共3页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目 (5 0 0 790 2 3 )
国家"十五"科技攻关资助项目
关键词
流域尺度
水土保持
生物措施
减沙效益
Watershed scale, Soil and water conservation, Benefit of sediment reduction.
