白河干流最小流量变化与生态基流计算研究

Change of minimum flow and calculation of ecological base flow of Baihe River mainstream

河南省鸭河口水库修建后对白河干流最小流量变化产生了影响。为保障白河流域内生态可持续发展,根据新店铺水文站50多年的水文资料,采取Tennant法、90%保证率法和最小月平均流量法等3种水文学方法,对白河干流生态基流进行计算。通过对比分析,确定90%保证率法计算结果适用于白河干流的生态基流量。

After the completion of Yahekou Reservoir in Henan Province, it has certain impact on the minimum flow of the mainstream of Baihe River. Based on more than 50 years hydrological data in Xindianpu Station, the ecological base flow of the mainstream of Baihe River were calculated with three methods of Tennant, 90% guarantee rate and minimum monthly average flow rate. Through comparative analysis, it is found that the result of 90% guarantee rateis more suitable for the ecological base flow.