水力发电学报2011，Vol.30Issue(2)：84-90,95,8.
三峡-葛洲坝梯级水库调度对坝下河流的生态水文影响
Impacts of the regulation of Three Gorges-Gezhouba cascaded reservoirs on downstream eco-hydrology
摘要
Abstract
The daily discharge of 1901 ～ 2002 at Yichang station was used as inflow condition for a simulation of the regulated outflow of the Three Gorges-Gezhouba cascaded reservoirs. Indicators of Hydrological Alteration and Ranges of Variability Approach were adopted to estimate the effects of reservoir regulation on the 33 eeo-hydrological indicators of the downstream eco-hydrology. The results show that the regulation causes a significant decrease in monthly averaged discharge in October, a significant increase in May and the early June, and a general increase to around 5000m3/s in the three months from January to March. It causes a great change in annual minimum flows, while a slight change in most of annual maximum flows and a moderate decrease only in 1-day and 3-days maximum flows. It causes a significant change in frequency and duration of the low flow pulse and little change in the high flow pulse. It causes a moderate change in the rising and falling rates of two adjacent days and a small change in frequency of flow rising and falling within a year. Its effects on ecosystem and the impacts of hydropower regulation, dynamic limited flood water level and storage timing on the flow regime were also discussed.关键词
生态水文/水文变化指标/变化范围法/梯级水库调度/三峡工程Key words
eco-hydrology/ Indicators of Hydrological Alteration (IHA)/ Ranges of Variability Approach (RVA)/ cascaded reservoirs operation/ Three Gorges Project分类
资源环境引用本文复制引用
王俊娜,李翀,廖文根..三峡-葛洲坝梯级水库调度对坝下河流的生态水文影响[J].水力发电学报,2011,30(2):84-90,95,8.基金项目
国家科技支撑计划课题(2008BAB29B09) （2008BAB29B09）
水利部公益性行业科研专项(200701029,200801023) （200701029,200801023）
国家软科学研究计划(2006GXS2B032) （2006GXS2B032）
