关键词: 城市湖泊;流域治理;水污染控制;水生态修复;

Abstract: Lakes play an important role in global hydrology, nutrient and carbon cycles, and play an inestimable ecological service function for human social and economic development. Under the trend of global warming and intensified human activities, lakes in the world have undergone drastic changes. Urban lake is an important part of urban hydrological ecosystem. With the acceleration of urbanization and the surge of urban population, in order to meet the needs of urban residents' production and living, the ecological environment problems of urban lakes have gradually become prominent. Firstly, we analyzed the problems in China's urban lakes, including the serious water pollution of urban lakes, the destruction of natural hydrological rhythm, the degradation of water ecosystem, and the disharmony between lake development and protection. Then, based on the principle of ecological priority and green development, we put forward a comprehensive technical system with ‘basic basin coordination as a prerequisite, source control and pollution interception as the core, water and land restoration as the foundation, smooth flow of water as the assistance, long-term repair for improvement, and smart construction and management as the guarantee’, and proposed several urban lake management and protection strategies, including the establishment of a coordinated watershed management mechanism, in-depth implementation of the Yangtze River Protection Law, and strengthening lake scientific research, which can provide reference for urban lake management.

Key words: urban lake; watershed management; water pollution control; water ecology restoration