Discussion on total ecological mark of river basic ecological flow

XUE Xiao-jie1,ZHANG Ze-zhong1,2,HUANG Si-xia1,HUI Yang-he3,WANG Kuan4(1 Key Lab of Northwest Water Resources and Environment Ecology of MOE,Xi'an University of Technology,Xi'an,Shaanxi 710048,China;2 College of Water Conservancy,Changsha University of Science and Technology,Changsha,Hunan 410076,China;3 Department of City and Resources Northwest University,Xi'an,Shaanxi 710069,China;4 Environmental Protection Bureau of Xi'an Baqiao Sub-bureau Environmental Monitoring Station,Xi'an,Shaanxi 710038,China)

ecological river flux;ecological mark;basic ecological flow;compensation benefit;reservoirs operation

【Objective】The research was to study the unit,reference value and caculation formder of ecological river flux.【Method】The calculation formula of river flow total ecological mark was put forward for discussing on measuring the ecological benefit of river flow by using reference tennant method idea of describing the relation between the ecological flow and the habitat quality.Finally,taking Longyangxia and Liujiaxia Reservoirs on Yellow River as demonstration to test the method.【Result】The result of the calculating case shows that the basic ecological flow compensation benefits were 28.94 billion ecological marks in 2003,which Huayuankou Station had obtained from Longyangxia and Liujiaxia reservoirs regulation.Namely,Longyangxia and Liujiaxia reservoirs respectively provided 19.75 billion ecological marks and 9.19 billion ecological marks of basic ecological flow compensation benefits for Huayuankou Station.【Conclusion】The article was for the purpose of the quota carrying on the weight to the runoff ecological benefit,laying the scientific foundation for the reservoir ecology dispatch.