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Ecological wetland paradigm drives water source improvement in the stream network of Yangtze River Delta

Journal of Environmental Sciences 2021年第12期33卷 55-72页

作者： Weidong Wang Ting Yang Weibing Guan Weixi Peng Ping Wu Bin Zhong Chundong Zhou Qinghua Chen Rongbin Zhang Kewen Xu Chengqing Yin Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China Jiaxing Water Conservancy Investment Co.Ltd. Jiaxing 314033China Water Resources&Hydroelectric Prospecting&Design Research Institute of Jiaxing City Jiaxing 314033China Haining Clean Source Water Co.Ltd. Haining 314400China Jiaxing Qiuyuan Monitoring Technology Co.Ltd. Jiaxing 314006China

Jiaxing created a precedent using bypass riparian marshes to purify micro-polluted water sources in ***-wetland complex with constructed root channel technology becomes a paradigm which can be analogized as"human-body wetland model"based on bionics or *** plant-bed/ditch system with highly active land/water ecotone interfaces,especially meandering boundaries,breeds many biochemical reactions"living areas".Optimization of hydraulic regulation promotes redox environment alternations and wetland treatment *** we reported a series of upgrades and performances in Guanjinggang wetland after the Shijiuyang *** reform of plant-bed/ditch system played a vital *** root channel zone was main force of wetland purification,and temporally the treatment effect was higher in low-temperature seasons indicating non-temperature dependent mechanisms *** pollution comprehensive index improved steadily from IV to III,and comprehensive pollution load was reduced by ca.40%–60%.Comprehensive evaluation function value further showed the gradients purification effect of the upgraded *** wetlands ameliorated source water quality,and reduced drinking water treatment reagents,thereby bringing about economic *** wetlands operation,people can see how the micro-polluted surface water becomes clear and clean,so promoting a significant social *** a viable component of urban green space,wetlands could beautify regional eco-environment,freshen the air,increase urban ecological taste,and enhance the eco-environmental protection ***,the multifunctional service values and indirect benefits are *** ecological wetlands provide a typical paradigm for water pollution remediation in developing countries and plays a leading role in technology engineering radiation effect.

关键词： Pond-wetland combination Constructed root channel technology plant-bed/ditch system Semi-subsurface flow wetland Human-body wetland model

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