2018, Volume 20, Issue 5
Strategic Study of CAE >> 2018, Volume 20, Issue 5 doi: 10.15302/J-SSCAE-2018.05.004
Review of Current Situation of Agricultural Non-Point Source Pollution and Its Prevention and Control Technologies
1. Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. Aisino Corporation, Beijing 100195, China;
3. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
4. Zhejiang University, Hangzhou 310058, China;
5. Research Center for Rural Economy, Ministry of Agriculture and Rural Affairs, Beijing 100810, China
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Abstract
Agricultural non-point source pollution is one of the main factors causing water pollution in China. Due to its characteristics of randomness, unfixed pollution discharge, and changes in pollution load, it is more difficult to control and prevent the pollution from non-point sources than that from point sources. Making clear of the current situation of non-point agricultural pollution and its prevention and control technologies is the premise of non-point pollution control. This paper summarizes the causes and present situation of agricultural non-point source pollution, and points out that the unreasonable fertilizer application and the pollutant discharge from large-scale livestock and poultry breeding farms are the most important sources of agricultural non-point pollution. The current mature non-point source pollution prevention and control techniques in planting and livestock industry are introduced. It also proposes that the combination of source control, process control, and end treatment is the most important prevention method for agricultural non-point source pollution. Corresponding prevention and control technologies of non-point source pollution should be adopted according to local conditions to realize the simultaneous development of environmental, economic, and social benefits.
Keywords
agricultural non-point source pollution ; farmland nutrient runoff ; pollutant discharge from livestock industry ; prevention and control technology
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