摘要
渭河流域水利水保措施对泥沙的影响作用，上中游地区主要以坡面水保措施为主，下游则主要是库坝、灌溉工程等水利措施，对径流的影响作用主要是农业灌溉引水。对实例的流域水文泥沙资料统计分析结果表明：该流域７０年代所减水量中，降雨和流域治理的作用分别占２２．６％和７７．４％，所减沙量中，降雨和流域治理的作用分别占４７．０％和５３．ｏ％；８０年代所减水量中，降雨和流域治理的作用分别占２１．３％和７８．７％，所减沙量中，降雨和流域治理的作用分别占１３．４％和８６．６％。
Water and soil conservation measures of slope influence mainly sediment in the region of the middle reaches andthe upper reaches of Weihe watershed,but the measures of water conservancy such as reservoirs,dams and irriga-tion projeets and so on,have an effect on sediment in the downreaches area,Agricultural irrigation affects primarilyrunoff.hydrology and sediment data of the watershed have been analysed statisticaly,the result shows:in 1970’sthe runoff amount which has been decreased by rainfall and watershed control is 22.6%and 77.4%respectively inthe watershed.The seditment amount which has been decreased bv rainfall and watershed control is 47.0%and53.0%respectively.But in 1980’9,the latter are respectively 21.3%and 78.7%,the latter are respectively13.4%and 86.6%.
出处
《水土保持通报》
CSCD
北大核心
1994年第5期48-52,共5页
Bulletin of Soil and Water Conservation
基金
黄河流域水保科研基金
关键词
水利水保措施
渭河流域
泥沙
径流
the measures of water conservancy and water and soil conservation the action to de-crease runoff and sediment Weibewatershed
