摘要
以调水区生态需水为研究对象,以可操作性为原则,从水循环角度,提炼调水区生态保护具体目标,构建了河道生态建设中"水-生境"平衡系统及调控系统,提出以目标生态需水阈值来确定生态水文调控方案。并用该方案对调水区各坝址进行生态水文调控计算,结果表明,调控后各控制断面10—次年3月的生态基流基本在年均流量的10%以上;在繁殖期4—9月各控制断面的生态基流基本在年均流量的30%以上,指标处于好的评价。
This paper, using the ecological water demand of Western Route of South-to-North Water Diver- sion Project as the research object and considering the operability of ecological water demand, sets up con- crete objectives of ecological preservation in water-exporting areas from the perspective of water-cycle, es- tablishes a ＂water-habitat＂ equilibrium theory and control system of river ecological building, and presents the threshold of goal ecological water demand to rule a hydrological control program of optimal allocation and scheduling reservoir, then uses the program rule to operate the dam on the transfer area. The results show that the ecological base flow of each control section is 10% more than the average annual flow dur- ing October to March; more than 30% in the breeding season time from April to September, the river eco- logical system reaches a good standard, the hydrological control program has practical value.
出处
《中国水利水电科学研究院学报》
2012年第1期29-35,共7页
Journal of China Institute of Water Resources and Hydropower Research
基金
国家"十一五"科技支撑计划项目(0109062007)
国家自然科学基金创新群体研究基金(50721006)
国家自然科学基金项目(51009149)
关键词
南水北调
西线工程
生态调控
阈值
South-to-North water transfer project
Western Route Project
ecological control
threshold
