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- W2380791735 abstract "As an important lake in the Haihe river basin,the Baiyangdian Lake plays an important role in the ecological health and environmental safety of the whole basin.To investigate the spatial-temporal variation of the water quality and the main factors affecting the quality,we employed grey clustering,comprehensive pollution index and single factor pollution indexes.The results showed that the water quality of Baiyangdian Lake has generally decreased since 1973.Specifically,the proportion of water with worse quality than class Ⅲ increased from 14.3% in 1973 to 83% in 2007.The order of the comprehensive pollution index in the year 2006 was spring summer winter autumn.The comprehensive pollution index of TP was the highest among the four parameters,reaching 14.86,while the comprehensive pollution index of BOD5 was the lowest,with an average of 7.67.In spatial terms,the order of pollution was northwest northeast southeast and southwest.Comparative analysis of the natural and social aspects indicated that the key natural impact factor was the quantity of inflow,which was far lower than the minimum ecological water demand.The social impact factors included the primary industry in Baoding,the secondary industry in Anxin and the tertiary industry in Baoding,with Pearson correlation coefficients of 0.771,0.708 and 0.624,respectively.The industry and fishery of Anxin and the agriculture in Baoding were key factors with Pearson correlation coefficients of 0.746,0.734 and 0.661,respectively.In addition,the correlation coefficients between the populations of Anxin and Baoding and water quality were 0.731 and 0.690,respectively.To improve the water quality of the lake,we suggest:① Control the water quality of the inflow,the non-point pollution and internal pollution of Baiyangdian;② Implement regionalized management (e.g.,the lake could be divided into a pollution control area,a comprehensive improvement area and a key protected area);③Enhance the ecological monitoring and early warning system,and improve environmental public policy and industrial environment management." @default.
- W2380791735 created "2016-06-24" @default.
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- W2380791735 date "2010-01-01" @default.
- W2380791735 modified "2023-10-04" @default.
- W2380791735 title "Causal analysis of the spatial-temporal variation of water quality in Baiyangdian Lake" @default.
- W2380791735 hasPublicationYear "2010" @default.
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