The urban lake ecosystem has the characteristics of long-term, complex and comprehensive in its ecological restoration process because it is related to social and economic activities at multiple levels. Located in Hangzhou City, China, the West Lake is a national-level scenic spot and a world heritage cultural landscape. It provides key ecosystem services for the city and has a significant impact on the urban ecological environment and the well-being of citizens. The West Lake has undergone an 1800-year governance process in history, realizing the harmonious coexistence with Hangzhou City. Since modern times, due to the rapid development of urbanization and industrialization, the water quality of the West Lake and its freshwater ecosystem have been greatly damaged. Since 2002, Hangzhou City has achieved the overall restoration of the West Lake ecosystem through a series of measures, such as water diversion projects, dredging projects, and the West Lake comprehensive protection project, and the water environment and lakeshore landscape have been greatly improved. This study analyzed the restoration technology of the West Lake ecosystem from two scales of the watershed and the site and discussed the water ecological governance system of the West Lake in the past 20 years. Through the data analyses of the West Lake land use, vegetation, TP, TN, NH3-N, CODMn and other multi-environmental factors, the results showed that the water quality, transparency and eutrophication of the West Lake had been greatly improved. At the same time, the application of large-scale restoration methods and technologies also required long-term observation, and attention should be paid to the proliferation of alien species and the loss of heritage value, so as to further avoid potential ecological risks caused by ecological restoration.

Wang Xin;Zhao Congcong;Liu Yang

School of Art and Design,Zhejiang Sci-Tech University,Hangzhou 310018,China

东北农业大学学报（英文版）

[1]Wang Xin;Zhao Congcong;Liu Yang-.Review of Restoration Technology and Multi-environmental Factors Analysis of West Lake Ecosystem in Hangzhou City)[J].东北农业大学学报（英文版）,2022(03):37-47

dredging

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