Water Ecosystem Resilience Evaluation and Promotion Based on DPSIR Model:Taking Tianjin as an Example
From the perspective of social ecological resilience,the Driver-Pressure-State-Impact-Response(DPSIR)model was introduced to construct a water ecological resilience evaluation system,and 18 water ecological resilience evaluation indicators covering both artificial and natural ecosystems were selected.The subjective and objective combination weights of each factor were determined using the improved level difference maximization combination weighting method.The empirical research on water ecological resilience in Tianjin showed that in 2018,there was a spatial difference in water ecological resilience between the north and the south,with a central difference.The overall level of water ecological resilience of Tianjin was poor.The results showed that,from the perspective of spatial planning,forest coverage and wetland rate were representative evaluation indicators that affects the resilience of water ecology in Tianjin.The representative evaluation indicators were analyzed using the overall connectivity index analysis method,and the improvement strategies were proposed for blue-green composites such as building forest cities,protecting and restoring wetland systems,and restoring blue-green ecological networks.Moreover,the effectiveness of the strategies and verified using the overall connectivity index analysis method.This paper provides theoretical support for refining the planning system of China's water ecosystem and technical support for achieving the sustainable development of China's water ecosystem.
water-ecosystem resilienceDPSIR modelcombination weightingblue green compositeimprovement strategy
NETL
NSTL
万方数据
