Research On Ecological Improvement Of Urban Inland River From The Perspective Of Sponge City Construction

Urban inland river is the zone where human activities and natural processes interact most strongly.With the acceleration of urbanization in China,the ecosystem of urban inland river has been seriously damaged.At present,most of inland river treatment in our country is in the bad cycle of "remediation--pollution--remediation",and the problem of how to comprehensively treat the damaged inland river ecosystem needs to be solved urgently.The Nanning city is one of the first batch of sponge city pilot cities in China.The study of urban river ecological management in the perspective of sponge city construction is of great significance to the urban river management of Nanning.In this study,a large number of literatures were referred to summarize the domestic and foreign research results and advanced experience on urban river management,so as to provide more ideas for solving the problems of urban river water resources,water environment and water landscape damage faced by China.Based on the analysis of current situations of urban river in China,the problems existing in the process of urban river regulation in China are pointed out.At the same time,combined with the influence of sponge city construction on the surface water circulation process,the planning strategy and technical measures of inland river regulation are proposed.Finally,taking the Nakao river comprehensive regulation project of Nanning city as an example,this paper analyzes the current situation of Nakao river comprehensive regulation project,puts forward the countermeasures of Nakao river ecological regulation from the perspective of sponge city construction by the landscape ecology,watershed ecology and other theories,and evaluates the social benefits,economic benefits and ecological benefits.Through the analysis and research of the examples,this paper is expected to be helpful to the construction of sponge city construction system and other urban river regulation projects that are or will be implemented.