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| Reduce-Retain-Reuse-Restore Technology for the Controlling the Agricultural Non-point Source Pollution in Countryside in China:Eco-Restoration Technology |
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| KeyWord:non-point source pollution; ecological restoration of water environment; ecological floating bed; hydrophyte restoration; ecological slope protection |
| Author Name | Affiliation | | LIU Fu-xing | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | SONG Xiang-fu | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | ZOU Guo-yan | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | FU Zi-shi | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | LIU Ya-qin | Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | XUE Li-hong | Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China | | YANG Lin-zhang | Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: |
| At present, rural water body in China is seriously polluted in general. The rural water environment ecological restoration, as the last step of non-point source pollution control technology system, has vital practical significance. In this paper, on the basis of previous work, rural water environment ecological restoration technologies at home and abroad were concluded and their technical principles were expounded. Some important conclusions were found, firstly, ecological floating bed technology is an effective water ecological restoration technology in situ with advantages of less investment, faster effect, and easier management. Especially the use of rice or other plants which can produce economic benefits as floating bed plants, not only can improve water quality, but also compensate for part of the investment cost. In addition, aquatic plants restoration technology is inevitable choice to improve self-purification capacity of water bodies and restored structure and function of aquatic ecosystem. Aquatic plants restoration, in accordance with the objectives and requirements, can reduce the concentration of pollutants in water effectively and promote water ecosystems development healthily. Finally, ecological revetment technologies, mainly the soil bioengineering, are suitable for rural river slope restoration, which could result in good recovery of the riparian vegetation and effective controlling of sloping shore erosion and agricultural non-point source pollution. The application of ecological restoration technologies can be combined with ecological interception technologies and nutrient utilization technologies. To meet different functions requirement and restoration objectives, integrated application of these technologies can improve the effectiveness of ecological restoration of water environment. |
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