摘要
河道内生态用水保证率是指在一定时间范围内,河道内生态用水量在时间或数量上大于河流生态系统的生态需水量所发生的概率.本文提出两类生态用水保证率计算方法,分别为基于频率分析与基于满足率的计算方法,分别应用于中长期与短期调度的生态用水保证率估算,并以淮河流域鲁台子站进行实例分析.第一类方法用来估算历史情况中的生态用水保证率,结果表明,汛期的适宜生态用水保证率偏低,平均约70%;第二类方法分析了2010年实测流量对长吻鮠生态需求的满足率,在产卵高峰期（5～8月）生态用水保证率仅53.7%.生态用水保证率指标可以应用到流域水资源管理中,为河流生态系统的健康提供保障,并可作为流域水资源配置的评价标准.
Guarantee rate of instream ecological water（GEW） refers to the probability which instream ecological water is larger than environmental flow in terms of satisfied time or flow rate within a certain period of time. Two calculation methods of GEW were proposed. The first one was based on frequency analysis which was appropriate for medium-and long-term planning and scheduling problem,and the second one was based on satisfaction rate which can be used in short-term scheduling. The Lutaizi station in the Huai River Basin was selected as a case study.The results of the first method which used to analyze the GEW in history showed that the optimum GEW in flood season was lower,with GEW about 70%. The second method was used to analyze the GEW for Lwiocassis Longsnout（Chinese Longsnout Catfish） in 2010. The GEW in spawning period（from May to August） was only 53. 7%. GEW can be applied for watershed management,which can provide guarantee for river ecosystem health and can be a new evaluation index for water resources allocation.
作者
孟钰
张翔
夏军
高仕春
王俊钗
吴比
MENG Yu;ZHANG Xiang;XIA Jun;GAO Shichun;WANG Junchai;WU Bi(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University, Wuhan 430072, China;School of Water Conservancy and Environment, Zhengzhou University, Zhengzhou 450001, China;Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan University, Wuhan 430072, China)
出处
《应用基础与工程科学学报》
EI
CSCD
北大核心
2018年第2期229-238,共10页
Journal of Basic Science and Engineering
基金
国家水体污染控制与治理科技重大专项(2014ZX07204-006)
国家自然科学基金项目(51279143)
关键词
生态需水量
频率分析
满足率
流域管理
水资源配置
environmental flow
frequency analysis
satisfaction rate
watershed management
water resources allocation
