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| Reduce-Retain-Reuse-Restore Technology for the Controlling the Agricultural Non-point Source Pollution in Countryside in China：A case study |
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| KeyWord:ontrol of non-point pollution in countryside; Reduce-Retain-Reuse-Restore（4R） theory; engineering application; TN load reduction；water quality improvement |
| Author Name | Affiliation | | YANG Lin-zhang | Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | XUE Li-hong | Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | SHI Wei-ming | Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | LIU Fu-xing | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | SONG Xiang-fu | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | WANG Shen-qiang | Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | ZHANG Yin-jiang | Shanghai Ocean University, Shanghai 201306 |
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| Abstract: |
| Non-point source pollution was more and more serious and became the key factor of the water pollution control in countryside in China. During the eleventh five-year period, under the support of the major S&T program for water pollution control and treatment, Reduce-Retain-Reuse-Restore theory（4R theory） and technologies for controlling agricultural non-point source pollution were applied at Longyan Village, watersheds of Zhihugang river, Tai Lake region. The comprehensive demonstration project for controlling the non-point source pollution was established and showed a good result. In this paper, the status of integrated pollution demonstration area was introduced, the designment of 4R technology and the link between different demonstration projects was also detailed based on the local terrain and river features. Then, the result for applied 4R technology and the improvement effect for local water quality was evaluated. Furthermore, the core of "4R" theory and technology was summarized and its development and application in the future was discussed. |
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