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waterquantityqualitycombinedevaluationmethodforriverswaterrequirementsoftheinstreamenvironmentindualisticwatercycleacasestudyofliaoheriverbasin
WANG Xiqin1; ZHANG Yuan2; LIU Changming3
2007
Source Publicationjournalofgeographicalsciences
ISSN1009-637X
Volume17Issue:3Pages:304
AbstractIn 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 requirements, 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 environmental flows of river requirements, but if considering the aspect of "quality", only Dongliao River can reach the "quality" standard. By water quantity-quality combined evaluation 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 demands.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/99596
Collection中国科学院地理科学与资源研究所
Affiliation1.中国人民大学
2.River and Coastal Environmental Research Center; Chinese Research Academy of Environmental Sciences
3.中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
WANG Xiqin,ZHANG Yuan,LIU Changming. waterquantityqualitycombinedevaluationmethodforriverswaterrequirementsoftheinstreamenvironmentindualisticwatercycleacasestudyofliaoheriverbasin[J]. journalofgeographicalsciences,2007,17(3):304.
APA WANG Xiqin,ZHANG Yuan,&LIU Changming.(2007).waterquantityqualitycombinedevaluationmethodforriverswaterrequirementsoftheinstreamenvironmentindualisticwatercycleacasestudyofliaoheriverbasin.journalofgeographicalsciences,17(3),304.
MLA WANG Xiqin,et al."waterquantityqualitycombinedevaluationmethodforriverswaterrequirementsoftheinstreamenvironmentindualisticwatercycleacasestudyofliaoheriverbasin".journalofgeographicalsciences 17.3(2007):304.
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