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| Thoughts on modelling and control of agricultural non-point source pollution in the lowland areas of Lake Taihu basin， China |
| Received:May 29, 2022 |
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| KeyWord:nitrogen;phosphorus;polder;ditch and pond |
| Author Name | Affiliation | | HUANG Jiacong | Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China | | ZHANG Jing | Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China | | JI Yulai | Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
University of Chinese Academy of Sciences, Beijing 100049, China | | GAO Junfeng | Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: |
| Polder is an artificial watershed unit widely distributed in the lowland area of Lake Taihu basin, with the severe problem of agricultural non-point source pollution. It is also a critical and unique geographical unit for agricultural non-point source pollution control, with great potential in reducing agricultural non-point source pollution. However, this potential has under-estimated or even neglected during the past decades. Therefore, this study identified the critical problems of non-point source pollution of nitrogen（N）and phosphorus （P） in lowland areas, including agricultural farmlands and aquaculture ponds, while elucidating the challenge of tracking N & P. The uniqueness of hydrological and N & P cycling in the polder ecosystem was summarized as along with the corresponding model descriptions. The potential of polders in enhancing N & P reduction capacity in lowland areas was also discussed. Furthermore, suggestions regarding the control and mechanism of agricultural non-point source pollution in polder areas were proposed from the perspectives of the control unit, precise treatment technology, and typical demonstration. |
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