摘要
Abstract
[Objective]In order to study the interannual change trends and laws of agricultural non-point source pollution in Shanghai in recent years,analyze and evaluate the effectiveness of agricultural non-point source pollution control,put forward the next stage prevention and control of agricultural non-point source pollution in Shanghai,so as to provide a theoretical basis for the prevention and control of agricultural non-point source pollution in Shanghai and the implementation of rural revitalization.[Methods]By using inventory analysis approach and equal-standard pollution loading approach,this paper studied the interannual variation trend of the total amount of agricultural non-point source pollution pollutants and the equal-standard pollution loading in Shanghai from 2011 to 2021,analyzed the non-point source pollution of livestock breeding,agricultural planting,aquaculture and rural domestic wastewater,and calculated the emission intensity of pollutants and industry.[Results]The results showed that the emissions of CODCr,ammonia nitrogen,TN and TP in Shanghai had decreased by 53.55%,33.25%,57.69%and 57.89%respectively in the past 10 years.The order of equal-standard pollution loading was TP>TN>CODCr>ammonia nitrogen.The emission intensity of livestock and poultry breeding,agricultural planting and rural domestic wastewater decreased by 76.95%,25.92%and 19.91%,while the emission intensity of aquaculture increased by 6.99%.At present,the main source of CODCr was rural domestic wastewater discharging,the main source of TN was agricultural planting and rural domestic wastewater discharging,and the main source of TP was agricultural planting.[Conclusion]Therefore,the emission control of TP and TN in planting industry,the emission control of CODCr,ammonia nitrogen and TN in rural domestic wastewater,and the emission intensity control of aquaculture should be the focus of agricultural non-point source pollution control in next stage.关键词
清单分析法/等标污染负荷/农业面源污染/年际变化/上海Key words
inventory analysis approach/equal-standard pollution load/agricultural non-point source pollution/interannual variation/Shanghai分类
资源环境
