渭河宝鸡市区段河道生态基流量初步研究

归纳了国内外有关河道生态基流量的理论研究以及计算方法,并对相关概念进行了辨析。在此基础上,结合渭河宝鸡市区段的实际,对其河道功能进行界定,采用Tennant法和最小月平均流量法对渭河宝鸡市区段不同时段的河道生态基流量进行定量研究,并分析了其生态基流缺水程度,即P=50%、75%、90%三个代表年的河道生态基流缺水天数依次为61天、149天、211天。成果可为渭河宝鸡市区段水资源的合理调配提供了科学依据。

Study on the ecological basic flow in Baoji City Reach of Weihe River

Some relative research theory and calculation methods for the river ecological basic flow both at home and abroad have been sumed up in this paper,and some related concepts were discussed.Then,considering the actual conditions of Baoji City Reach of Weihe River,the function of the river reach was determined.The ecological basic flow of the reach in different periods has been quantitqtively researched with Tennant and the minimum monthly average flow methods.Further more,the degree of ecological water shortage was analyzed,and for the three representative years(P=50%,P=75%,P=90%) the water shortage days for the ecological basic flow were in turn as 61 days,149 days,211 days respectively.It is expected to provide a scientific basis for the reasonable allocation of water resources in Baoji City Reach of Weihe River.