2013•Anhui nongye kexueRequires access
Investigation on the Eutrophication Status of the Pearl River Guangzhou Section during Drought Period
Ping Li
Open publisher page 1 citations
Abstract
With eutrophication status of the Pearl River Guangzhou Section(from Yagang Bridge to Pazhou Bridge) as investigation objects,arranging 6 sampling monitoring plots,chlorophyll a(chla),total phosphorus(TP),total nitrogen(TN),secchi disk depth(SD)and CODMn were detected and analyzed,comprehensive nutrition state index method was adopted to evaluate eutrophication degree in drought period.The results showed that: Guangzhou section of the Pearl River is in serious eutrophication during the dry season.Average concentration of the main pollutants chla,TP,TN,SD and the CODMn were inferior to water quality standard V grade of surface water.Aquaculture on upper reaches of the Pearl River,industrial emissions from surrounding cities and urban sewage from Guangzhou is the main reason of water pollution.The establishment of combined prevention and abatement long-term mechanism will help to solve the problem of environmental pollution in the Pearl River water.