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- W2393085992 abstract "Based on the observed data in monitored drainage areas and GIS spatial analysis tools,watershed basic database of Shitoukoumen Reservoir Basin was built.Multivariate analysis and partial redundancy analysis(pRDA)were employed to analyze the contribution of the different influencing factors,including natural environment factors,anthropogenic disturbance factors and watershed scale factors,and their interaction between them to water quality during dry season and rainy season.In addition,pRDA was also used to investigate the effect of the different influencing factors on the main types and forms of the non-point source(NPS)pollutant export.The results showed that different influencing factors led to great changes in water quality at spatial and seasonal scales.All selected influencing factors explained 64.5% and 68.2% of the spatial variation of water quality over dry season and rainy season,respectively,which shows clear seasonal difference.Natural environment factors played the key role on the spatial variation of water quality associated with the NPS pollution,which explained 43.7% and 59.5% of the spatial variation of water quality during dry and rainy season,respectively.And anthropogenic disturbance factors were the second important factors,which possess above 20% of the spatial variation during both dry and rainy season.The interaction between natural environment factors and anthropogenic disturbance factors resulted in more NPS pollutant export during dry season than that during rainy season,which the former possesses above 20% of the spatial variation of water quality and the latter does less 5%.During dry season,residential land used of anthropogenic disturbance factors dominates some NPS export,including the ammonia nitrogen,particle organic nitrogen and organic matter,and meanwhile discharge area of scale factors controlled dissolved phosphor and organic matter export.During rainy season,interaction of different influencing factors controlled the types and forms of NPS pollutant export." @default.
- W2393085992 created "2016-06-24" @default.
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- W2393085992 date "2010-01-01" @default.
- W2393085992 modified "2023-09-23" @default.
- W2393085992 title "Analysis of environmental factors influencing non-point source pollutants." @default.
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