关键词: 多目标生态水网;模型构建方法与技术;模型评价;南京市;

Abstract: The construction and evaluation of ecological water network is a comprehensive problem involving many factors such as flood control, water resources utilization, water ecology and water environment. It is of great significance to better coordinate the relationship among all factors and improve the comprehensive benefits of ecological water network. This study puts forward a basic concept of ecological water network construction, that is to focus on the two elements of water level and flow, optimize the construction mode and scheduling rules of the ecological water network, and extract the ecological water network to meet the needs from multiple factors. Combined with ArcGIS, MIKE, Matlab, etc., a 1D-2D coupling model of multi-objective ecological water network was established, which realized the unified simulation of flood control, water supply and water environment management. Based on the analytic hierarchy process (AHP), an evaluation index system of ecological water network was constructed. Finally, the research results were applied to the ecological water network of Gucheng Lake in Gaochun County, Nanjing City. The results showed that compared with the current water network, the proposed ecological water network could not only meet the flood control safety, but also enhance the utilization efficiency of water resources and improve the water ecological environment by optimizing the regulation of water level and flow. The proposed evaluation method is reliable.

Key words: multi-objective ecological water network; model construction method and technique; model evaluation