Evaluation of water resources carrying capacity of Nanjing based on entropy weight and TOPSIS model
Based on the 4 dimensions of water resources,economy,society and ecological environment,an evaluation system of water resources carrying capacity with 16 indicators was constructed.The method of combining entropy weight and TOPSIS model was used to conduct a comprehensive analysis of the water resources carrying capacity of Nanjing from 2012 to 2022.At the same time,the obstacle degree function model was used to objectively diagnose the main obstacle factors.The results showed that the water resources carrying capacity in Nanjing exhibited an overall upward trend from 2012 to 2022,increasing from 0.2856 to 0.5868,and reaching a"moderate"level overall.The contributions of each subsystem to the comprehensive evaluation values increased year by year,with per capita water resources,the proportion of the tertiary industry,urbanization rate,and green coverage rate in built-up areas were the main influencing indicators.The main obstacles to the water resources carrying capacity in Nanjing were concentrated in the ecological subsystem and social subsystem.In the future development,Nanjing should optimize the urban functional gradient,build a connotative water use system,and pay attention to the circular economy in order to improve water use efficiency and achieve a healthy balance between socio-economic development and the water resources system.
国家科技期刊平台
NSTL
万方数据
