Abstract
Located in the junction of Dadu River, Qingyi River and Minjiang River, Angu Hydropower Station has the typical characteristics of plateau estuary wetlands. Since river systems are inter-relate and interact each other here, the transitional zone is with the ecological characteristics of rich biodiversity, frequent human disturbance and fragile ecological environment. According to characteristics of regional wetland ecosystem, and based on the specific investigation on the regional ecological characteristics of the flora and fauna, sediment and water quality, this research built an index system and evaluated the function of ecosystem. And then taking it as basis, this paper distinguished the effect mechanism of different driving factors on wetland ecosystem with the method of gradient analysis, so as to provide theoretical basis for the ecological restoration of this region.
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