Evaluation of Water Environment Quality of Si River Based on Multivariate Statistical Method

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  Application of multivariate statistical analysis and system clustering analysis method,based on the detection index of suspended solids(SS),water temperature,dissolved oxygen(DO),pH,oxidation-reduction potential(ORP),total nitrogen(TN),dissolved total nitrogen(DTN),chemical oxygen demand(CODMn),ammonia nitrogen(NH4+-N),nitrate nitrogen(NO3--N),chlorophyll(Chla),dissolved total phosphorus(DTP),dissolved inorganic phosphorus(DIP),total phosphorus(TP)and alkalinity were measured, analyzed on 21 monitoring sections of Si River and major tributaries.The results show: Nitrogen and phosphorus are the main pollution components in 2013-2014 of Si River.The results provide basic data and theoretical basis for pollution control of Si River.
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