2005～2014年苏州市农业面源污染源强变化特征

发布时间：2018-03-26 00:12

本文选题：苏州市　切入点：清单分析　出处：《热带作物学报》2016年09期

【摘要】：利用清单分析的方法,对2005~2014年苏州市农业面源污染排放量进行了计算,分析该地区农业面源污染源强的时间变化特征。研究结果表明,2014年苏州市农业面源污染化学需氧量(COD)、氨氮(NH4+-N)、总氮(TN)和总磷(TP)的排放总量分别为131 843.8 t、6 150.2 t、20 848.5 t和2 922.8 t,属于畜禽养殖型和农村生活双重污染区。而近十年苏州市农业面源污染总体呈现逐年下降趋势,较2005年分别降低38.40%、21.80%、17.13%和25.26%。同时,选用等标污染负荷法分析了苏州市的农业面源污染风险,按照污染物等标排放量TNTPCOD,而按照行业等标排放量畜禽养殖农村生活种植业水产养殖。近十年苏州市农业面源污染等标污染排放量从554.1亿m~3降至420.6亿m3,降低24.09%,污染风险降低。随着工业经济的逐年提升,苏州市农业面源污染排放量逐渐下降,但农业面源污染风险依旧存在,TN污染风险最高,且污染来源复杂,应加强各行业的协同减控。
[Abstract]:Based on the inventory analysis method, the agricultural non-point source pollution emissions from 2005 to 2014 in Suzhou City were calculated. The characteristics of time variation of agricultural non-point source pollution sources in this area were analyzed. The results showed that the total emission of COD, NH _ 4-N _ (4), TNN (NH _ 4-N _ 4) and total phosphorus (TP) of agricultural non-point source pollution in Suzhou in 2014 were 131 843.8 t ~ 6 150.2 t ~ (6) t ~ (2) ~ (20 848.5 t), respectively. And 2 922.8 t, which belongs to the double pollution area of livestock and poultry breeding and rural life. In the last ten years, agricultural non-point source pollution in Suzhou has been decreasing year by year. Compared with 2005, 38.40% 21.80% and 25.26% lower than 2005 respectively. At the same time, the risk of agricultural non-point source pollution in Suzhou was analyzed by using the equal-standard pollution load method. According to the standard discharge of pollutants, TNTPCOD, and livestock and poultry farming in rural areas, aquaculture. In the last ten years, the discharge of agricultural non-point source pollution in Suzhou decreased from 55.41 billion mm3 to 42.06 billion m3, reducing 24.09 and polluting. Risk reduction. As the industrial economy increases year by year, The discharge amount of agricultural non-point source pollution in Suzhou is decreasing gradually, but the agricultural non-point source pollution risk is still the highest and the pollution source is complex, so it is necessary to strengthen the coordinated reduction and control of agricultural non-point source pollution.
【作者单位】：苏州科技大学环境科学与工程学院;江苏省环境科学与工程重点实验室;
【基金】：国家自然科学基金项目(No.51508366) 江苏省高校自然科学基金项目(No.14KJB610008) 苏州市科技计划项目(No.1SYN201411) 国家级大学生创新创业训练计划项目(No.201510332005)
【分类号】：X71

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