黄河上游已建梯级电站的水环境累积效应

Cumulative effect of water environment of existing cascade stations on the upper Yellow River

通过对黄河上游梯级开发程度较高的龙羊峡~刘家峡河段水文、水温、水质等环境要素的累积效应分析,认识水电梯级开发布局、水库规模、水库调节方式对水文情势、水温及水质的累积作用、影响程度和演变规律,以期为黄河流域待开发河段及其它流域水电开发在水环境影响分析方面提供一些参考。

Through analysis of the cumulative effect of environmental elements such as hydrology,water temperature and water quality of the highly-developed Longyangxia-Liujiaxia reach on the upper Yellow River,the paper describes the cumulative effect of hydropower cascade development,reservoir scale and regulation mode on the runoff,sediment,channel pattern,reservoir temperature and water quality,and the impact degree and evolution regularity,so as to provide reference for analysis of impact on water environment for the planned reach development of the Yellow River and hydropower development on other rivers.