Ecological assessment of lakeshore wetland rehabilitation on eastern route of South-to-North Water Transfer Project |
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Authors: | Jian ZHANG Fei MENG Yifeng LU Yuming JING Huayong ZHANG Bo ZHANG Chenglu ZHANG |
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Institution: | (1) School of Environmental Science & Engineering, Shandong University, Jinan, 250100, China;(2) School of Civil Engineering, Shandong Jianzhu University, Jinan, 250014, China;(3) Center of Energy and Environmental Research, North China Electric Power University, Beijing, 102206, China |
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Abstract: | To evaluate the ecological effects of lakeshore wetland rehabilitation on the eastern route of the South-to-North Water Transfer
Project, species composition, coverage, height, and biomass of wetland communities at 22 sites of the study area on the shore
of Nansi Lake in April and May 2007 were investigated. The wetlands under investigation were divided into platform fields,
transition zones, and shallow water zones according to differences in elevations, water levels, and human activities. The
species richness index, Shannon-Wiener index, Simpson index, and Pielou Evenness index were adopted to delineate and discuss
the ecological effects of lakeshore wetland rehabilitation in 22 quadrates. Results showed that the species richness of the
wetland areas after 2 years’ rehabilitation amounted to 47 of 24 families, higher than 25 of 20 families in areas without
rehabilitation. The biodiversity index and abundance index of rehabilitated areas were also higher than those of platform
fields and fish ponds where there was no rehabilitation. In addition, the Shannon-Wiener index, Simpson index, and community
evenness index of platform fields in rehabilitated wetland areas were 1.619, 0.745, and 0.860, respectively, higher than those
of the platform fields before rehabilitating. The results suggested that the constructed lakeshore wetland played an important
role in protecting the diversity of species. |
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Keywords: | wetland rehabilitation Nansi Lake constructed wetland South-to-North Water Transfer Project |
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