基于二元水循环的河流生态需水水量与水质综合评价方法——以辽河流域为例(英文)

编号 zgly0001586622

文献类型 期刊论文

文献题名 基于二元水循环的河流生态需水水量与水质综合评价方法——以辽河流域为例(英文)

作者 王西琴  张远  刘昌明 

作者单位 SchoolofNaturalResourcesandEnvironmentRenminUniversityofChina  RiverandCoastalEnvironmentalResearchCenter  ChineseResearchAcademyofEnvironmentalSciences  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  Beijing1008 

母体文献 Journal of Geographical Sciences 

年卷期 2007年03期

年份 2007 

分类号 X171  X824 

关键词 dualisticwatercycle  rivers  environmentalflowsofriverrequirements  waterquantity  waterquality  evaluation  LiaoheRiver 

文摘内容 In this article the meaning of the quantity and quality of environmental flows of river in dualistic water cycle is discussed,and compared with the meaning of unitary water cycle. Based on the analysis of the relationship between environmental flows of river re-quirements,the efficiency of water resource usage,the consumption coefficient,and the concentration of waste water elimination,the water quantity and water quality calculation method of the environmental flows of river requirements in dualistic water cycle is developed,and the criteria for environmental flows of river requirements are established,and therefore the water quantity-quality combined evaluation of natural river flows requirements are realized. Taking the Liaohe River as a model,the environmental flows of river requirements for Xiliao River,Dongliao River,mainstream Liaohe River,Huntai River and northeast rivers along the coasts of the Yellow and Bohai seas in unitary water cycle are calculated,each taking up 39.3%,63.0%,43.9%,43.3% and 43.5% of runoff respectively. Evaluated according to Tennant recommended flow,the results show that: except Xiliao River is median,the rest are all upon good,the Dongliao River is even very good. The corresponding results in dualistic water cycle are that,the proportion of natural flows for each river is 57.5%,74.1%,60.8%,60.3% and 60.4%; while the combined evaluation results show that: considering quantity,except Xiliao River,the rest rivers can all achieve the quantity criteria of the en-vironmental flows of river requirements,but if considering the aspect of quality,only Dongliao River can reach the quality standard. By water quantity-quality combined evalua-tion method,only Dongliao River can achieve the criteria. So the water quality is the main factor that determines whether the environmental flows can meet the river ecosystem de-mands.