南水北调与水利科技2011，Vol.9Issue(3)：118-123,6.DOI:10.3724/SP.J.1201.2011.03118
随机流量历时曲线及其在生态流量计算中的应用
Stochastic Flow Duration Curve and its Application in Ecological Instream Flow Estimation in the Songhuajiang Basin
摘要
Abstract
Determination of ecological instream flow requirements has attracted great research efforts since the last decade, for its importance in maintaining the health of the riverine ecosystem. Various approaches have been proposed to estimate the ecological instream flow requirements, but it is still far from solved. In this paper, the stochastic flow duration curve method is introduced focusing not only on the magnitude of flow but also on the duration of a specific flow level. Moreover, ecological instrearn flow requirements can be estimated by the integration of SFDC in the frequency domain. In the case study of Songhnajiang Basin located in the Northeast of China, it is found that the minimum and moderate ecological instream flow requirements of a river can be estimated by Q97.10 ,SFDC with reliability of 75％. According to the SFDC method,it is estimated that the minimum and moderate ecological instream flow requirements of Nenjiang are 0. 46×109 m3 and 9. 91×l09 m3 ,accounted for 2. 6％ and 56. 2％ of local water resources respectively. In lower reaches of Songhuajiang, minimum and moderate ecological instream flow requirements are 7. 91 × 109 m3 and 38. 89× 109 m3 ,accounted for 13. 4％ and 65. 7％ of the annual runoff respectively.关键词
随机流量历时曲线/河道生态需水量/生态流量/松花江流域Key words
stochastic flow duration curve (SFDC)/ ecological flux/ ecological flow/ Songhuaj iang Basin分类
资源环境引用本文复制引用
刘静,郑红星,戴向前..随机流量历时曲线及其在生态流量计算中的应用[J].南水北调与水利科技,2011,9(3):118-123,6.基金项目
中国科学院知识创新工程重要方向项目(KZCXZ-YW-Q06-1) （KZCXZ-YW-Q06-1）
