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Coupling interaction between biodiversity and aquatic habitat area in Western Route Project vicinity

Water Science and Engineering 2010年第3期3卷 354-360页

作者： Shi-min TIAN Zhao-yin WANG Xiang-jun LIU Shi-kui LIANG Key Laboratory of Yellow River Sediment MWR Institute of Hydraulic Research YRCC Zhengzhou 450003 P. R. China State Key Laboratory of Hydroscience and Engineering Tsinghua University Beijing 100084 P. R. China Henan Water and Power Consulting Engineering Co. Ltd. Zhengzhou 450008 P. R. China Department of ltyctraulic Engineering North China University of Water Resources and Electric Power Zhengzhou 450008 P. R. China

The Western Route of the South-to-North Water Transfer Project will divert water from the upper Yangtze River and its tributaries, the Dadu River and Yalong River, to the upper Yellow River. The project may ease the water shortage in the Yellow River Basin. However, it may also have some effects on the ecosystem in the upper Yangtze River Basin. benthic invertebrates play an important role in the river ecosystem, particularly in the circulation of materials and nutrition. benthic invertebrates are widely used to quickly assess river ecosystems because of their rapid response to changes in the water environment. The diversity of benthic invertebrates is closely associated with the aquatic habitat area. This study examined this interaction by sampling the benthic invertebrates in an expanding area. The conclusions are that the diversity of benthic invertebrates begins to decrease when the aquatic habitat area is reduced to 45% of the original area, and decreases dramatically when the aquatic habitat area is reduced to 10% of the original area. The aquatic habitat area should be kept at more than 45% of the original area in order to maintain the significant diversity of benthic invertebrates.

关键词： Western Route Project South-to-North Water Transfer Project," river ecosystem benthic invertebrates biodiversity aquatic habitat area

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