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	Fuzzy Comprehensive Evaluation Model of Water Quality Eutrophication in Tributaries of Three Gorges Reservoir Based on Rough Set
	Li Feng; Lei Feng; Yan Huyong; Sheng Zhang
	2015
摘要	This paper aims to provide an evaluation of water eutrophication method in Three Gorges Reservoir tributaries for support people do valuable research in this area. As the Three Gorges Reservoir Region has over 70 branches, it's difficult to make a long-term water quality monitoring to single river. We have considered the influence factors of eutrophication with uncertainty of the evaluation standard, we establish a relationship function according to the different indicators and through the value reduction of rough sets to determine the weight coefficient of those parameters. We Combined with the chlorophyll a (Chla), total nitrogen (TN), total phosphorus (TP), Chemical oxygen demand (COD), Transparency(SD) to set up the fuzzy evaluation method of eutrophication in Three Gorges Reservoir tributaries, and we use this method compare with comprehensive nutrition state index in this paper based on historical data of typical tributaries in reservoir like Xiangxi River, Caotang river, Xiaojiang river, Daning river, the result shows: Although there are some differences between the two methods, but the empirical evaluation results are consistent with the actual situation.
语种	英语
会议(录)名称	2015 4TH INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENTAL PROTECTION (ICEEP 2015)
页码	839-846
通讯作者	Li, F (reprint author), Chongqing Res Acad Environm Sci, Chongqing 401147, Peoples R China.
收录类别	ISTP
会议地点	Shenzhen, PEOPLES R CHINA
会议日期	JUN 02-04, 2015