河流健康及其指标(英文)

编号 zgly0001585956

文献类型 期刊论文

文献题名 河流健康及其指标(英文)

作者 刘昌明  刘晓燕 

作者单位 CollegeofWaterSciences  BeijingNormalUniversity  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  YellowRiverConservancyCommission 

母体文献 Journal of Geographical Sciences 

年卷期 2009年01期

年份 2009 

分类号 X820 

关键词 healthyriver  signal  criteria  standard  environmentalflows 

文摘内容 Based on the author’s practice in river harnessing,this paper defines that a healthy river is a river whose social and natural functions can be balanced or compromised in terms of the socio-economic,ecological and environmental values associated with the river.The environmental values of river systems should be judged according to the following criteria:the signal of a healthy river should be associated with favorable riverbed,acceptable water qual-ity,sustainable river ecosystem and compatible runoff.The river health criterion should reflect the river’s natural function status which includes the riverbed,water quality,river ecosystem and runoff.But,the variety and quantity would be different for different rivers depending on different natural features and social background.The standards to be adopted for a healthy river should be determined according to the requirements for maintaining river’s normal natural functions and the extent whether the social and natural functions could perform in a balanced way,and also the standards adopted should be adjusted according to the change of the given conditions.The key factor of river health is the enough and clean flow.The authors stressed that human activities would hurt the river health which include excessive water diversion and excessive power generation from the river,improper regulation of flood and sediment,and over discharge of sewage into the river and over change in fish habitat.Taking the Yellow River as a case,this paper also discussed the method to identify what are the standards of a healthy river as well as environmental flows.