Investigation and Control Strategy of Agricultural Non-point Source Pollution in Nanchang Lake District of Poyang Lake Basin
Agricultural non-point source pollution control is an important part of the water environment treatment of key river basins during the 14th Five-Year Plan period.In order to analyze the characteristics and temporal-spatial distribution of agricultural non-point source pollution in Poyang Lake basin,this paper takes Nanchang Lake District of Poyang Lake Basin as the research object.To promote the implementation of agricultural non-point source pollution control in the region,the pollution load of the four agricultural non-point sources of rural domestic sewage,agricultural planting,livestock and poultry breeding and aquaculture in the catchment area of Nanchang Lake area in Poyang Lake Basin in 2020 was systematically analyzed through field investigation,data collection and analysis.Results show that:The pollution of rural domestic sewage is mainly concentrated in the catchment area of Qinglan Lake,Jinxi Tsui Liujia and Wuhu Branch,the non-point source pollution of agricultural planting is mainly concentrated in the catchment area of Qinglan Lake,Jinxi Tsui Liujia state-controlled section,and the pollution of livestock and poultry breeding is mostly concentrated in the catchment area of Qinglan Lake and Jinxi Tsui Liujia state-controlled section.The pollution of aquaculture mainly concentrated in the catchment area of Liujia and Nanjishan state-controlled section in Jinxi Tsui.Among them,the agricultural non-point source pollution in Qinglan Lake and Liujia area in Jinxi is the key point that needs to be controlled in Nanchang Lake District,and the production of COD,NH4+-N,TN and TP account for 78.6％,66.7％,70.9％and 69.0％of the total agricultural non-point source pollution in the five state-controlled sections,respectively.
Poyang Lake basinagricultural non-point source pollutionstate-controlled sectionwater environmental qualitycontrol strategy
万方数据
维普
