南水北调与水利科技2018，Vol.16Issue(1)：108-113,6.DOI:10.13476/j.cnki.nsbdqk.20180017
基于关键功能组的河道内生态需水计算
Calculating ecological flow based on key functional group
摘要
Abstract
The study of ecological flow is a hot field in ecology and hydrology.However,the existing methodologies do not con-sider the functional integrity of an eco-system.In this study,we simulated the nutritional relationships between the communities of an eco-system in Xiaoqinghe river basin using the model of Ecopath.After determining the key fishes,we analyzed the veloci-ty and water level demand of the key fishes by the habitat suitable index.Finally,coupling the velocity and water level demand of multiple species,we calculated the eco-flow by the Adapted Ecological Hydraulic Radius Approach.The results showed that the water requirements of the upper,middle,and lower reaches were 4.28 m3/s,0.74 m3/s,and 3.47 m3/s respectively in non-spawning season,and 23.52 m3/s,5.96 m3/s(or 8.65 m3/s),37.38 m3/s respectively in spawning season.Compared with the approach of Tennant,our method could keep the ecosystem′s health condition above the "average" level,and could satisfy the water requirement of the majority of aquatic organisms.Besides,this method shows the difference between spawning season and non-spawning season,thus gives reference for the seasonal regulation of water resources in the basin.关键词
Ecopath/关键功能组/生态需水/AEHRA法/小清河流域Key words
Ecopath/key functional group/ecological flow/AEHRA/Xiaoqinghe River Basin分类
资源环境引用本文复制引用
张远,刘德虎,张纯斌,于心怡,赵长森,杨胜天,刘昌明,张惠潼,相华,孙影,杨增丽,侯志强..基于关键功能组的河道内生态需水计算[J].南水北调与水利科技,2018,16(1):108-113,6.基金项目
国家自然科学基金项目(41271414) （41271414）
北京市共建项目专项资助National Natural Science Foundation of China(N41271414) （N41271414）
Special Fund of Beijing Key Laboratory Jointly Building Project （）
