Case study on rehabilitation of a polluted urban water body in Yangtze River Basin

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• 作者：Juan Wu ; Shuiping Cheng ; Zhu Li ; Weijie Guo…
• 关键词：Yangtze River Basin ; Urban water bodies ; Vegetation replanting ; Rehabilitation ; Water quality ; Aquatic ecosystem ; Biodiversity
• 刊名：Environmental Science and Pollution Research
• 出版年：2013
• 出版时间：October 2013
• 年：2013
• 卷：20
• 期：10
• 页码：7038-7045
• 全文大小：411KB
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• 作者单位：Juan Wu (1)
  Shuiping Cheng (1)
  Zhu Li (2)
  Weijie Guo (2)
  Fei Zhong (1)
  Daqiang Yin (1)
  
  1. College of Environmental Science and Engineering, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, 1239 Siping Road, Shanghai, 200092, China
  2. Chinese Academy of Sciences, Institute of Hydrobiology, Wuhan, 430072, China
  
• ISSN：1614-7499

文摘

In the past three decades, the fast development of economy and urbanization has caused increasingly severe pollutions of urban water bodies in China. Consequently, eutrophication and deterioration of aquatic ecosystem, which is especially significant for aquatic vegetation, inevitably became a pervasive problem across the Yangtze River Basin. To rehabilitate the degraded urban water bodies, vegetation replanting is an important issue to improve water quality and to rehabilitate ecosystem. As a case study, a representative polluted urban river, Nanfeihe River, in Hefei City, Anhui Province, was chosen to be a rehabilitation target. In October 2009 and May 2010, 13 species of indigenous and prevalent macrophytes, including seven species emergent, one species floating leaved, and five species submersed macrophytes, were planted along the bank slopes and in the river. Through 1.5?years-replanting practice, the water quality and biodiversity of the river had been improved. The concentrations of total nitrogen (TN), total phosphorus (TP), and ammonia nitrogen (NH4 +–N) declined by 46.0, 39.5, and 60.4?%, respectively. The species of macrophytes increased from 14 to 60, and the biodiversity of phytoplankton rose significantly in the river (p-lt;-.05). The biomasses of zooplankton and benthos were also improved after the vegetation replanting. The study confirmed that vegetation replanting could alleviate the increasing water pollution and rehabilitate the degraded aquatic ecosystem. The case study would be an example for polluted urban waters restoration in the middle–downstream area of Yangtze River Base.