基于非点源污染约束的江苏省农业生产效率分析

发布时间：2018-04-06 20:29

本文选题：非点源污染　切入点：农业生产效率　出处：《江苏农业科学》2017年17期

【摘要】：采用基于松弛变量(SBM)的超效率数据包络分析模型,测度2013—2015年江苏省各地级市非点源污染约束下的农业生产效率,分析其年度变化、区域差异和改善途径。结果表明,非点源污染约束条件下,南京、苏州、扬州、徐州4个地级市的农业生产效率呈逐年升高趋势;2015年徐州、苏州、扬州、南京、无锡5市的农业生产有效率,其他地级市存在无效率现象;无锡、常州、镇江、泰州、南通5个地级市的农业生产要素利用率有不同程度的提升空间,常州市的化学需氧量排放量、镇江市的氨氮排放量有一定减排潜力,南通、泰州2个地级市的化学需氧量、氨氮排放量均有较大削减潜力;苏北除徐州市外,其他地级市的农业生产要素投入利用率有较大提升潜力;连云港、宿迁2市要重点大力削减化学需氧量的排放,盐城市要重点治理氨氮污染;在非点源污染治理方面,苏南地区可通过结构优化进一步减排,苏中、苏北地区须推进农业清洁生产以降低非点源污染物排放强度。
[Abstract]:The super-efficiency data envelopment analysis model based on relaxation variable SBM is used to measure the agricultural production efficiency under the constraint of non-point source pollution in the prefectural cities of Jiangsu Province from 2013 to 2015. The annual changes, regional differences and ways of improvement are analyzed.The results showed that the agricultural production efficiency of Nanjing, Suzhou, Yangzhou and Xuzhou was increasing year by year, and that of Xuzhou, Suzhou, Yangzhou, Nanjing and Wuxi was increasing year by year, and that of Xuzhou, Suzhou, Yangzhou, Nanjing and Wuxi in 2015.Other prefecture-level cities have inefficiency phenomenon, Wuxi, Changzhou, Zhenjiang, Taizhou and Nantong five prefectural cities have different degrees of improvement in the utilization of agricultural production factors, Changzhou City chemical oxygen demand emissions,The discharge of ammonia nitrogen in Zhenjiang city has some potential to reduce the emission of ammonia nitrogen. The chemical oxygen demand and ammonia nitrogen emission of two prefecture-level cities in Nantong and Taizhou have great potential to reduce.The utilization rate of agricultural production factors in other prefecture-level cities has great potential for improvement. Lianyungang and Suqian cities should focus on reducing the discharge of chemical oxygen demand, Yancheng city should focus on the control of ammonia nitrogen pollution, and in the area of non-point source pollution control,In the south of Jiangsu province, the emission reduction can be further achieved through structural optimization. In order to reduce the emission intensity of non-point source pollutants, the agricultural cleaner production should be promoted in central and northern Jiangsu.
【作者单位】：常州信息职业技术学院经贸管理学院;常州大学环境与安全工程学院;
【基金】：教育部人文社会科学研究规划基金(编号:14YJAZH078) 江苏省高校“青蓝工程”项目
【分类号】：F327

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