摘要
分析了近50年祖厉河流域出口断面靖远水文站的年径流量、年输沙量,总体来看,年径流量和输沙量均表现为下降趋势,径流量与输沙量关系密切,直接影响到该流域输沙量的变化。同时,近50年来,祖厉河泥沙进入黄河后在较大时段内呈扩散状态,且黄河安宁渡断面含沙量在一定程度上取决于祖厉河入黄口的水沙状况。
Annual runoff and sediment yield in 50 years were analyzed according to the data came from Jingyuan Hydrologic Station at watershed outlet of Zuli River Basin.As a whole,runoff was closely related to sediment yield and they all exhibited a trend to decrease.Runoff directly affected the sediment yield of the Basin.Meanwhile,in recently 50 years,the sediment of Zuli River entering into the Yellow River presented a diffusion state in a long time and the sediment yield of outlet of An Ningdu depended on the runoff and sediment state of the entrance of Yellow River to some extent.
出处
《水利科技与经济》
2010年第12期1345-1347,共3页
Water Conservancy Science and Technology and Economy
关键词
径流量
输沙量
含沙量
runoff
sediment yield
sediment discharge
