Evaluating water resources carrying capacity of Pearl River Delta by entropy weight-TOPSIS model

To understand the spatio-temporal changes in water resources carrying capacity (WRCC) of Pearl River Delta (PRD), 19 indicators were selected from three subsystems (water resources, socio-economic, and eco-environment), entropy weight-TOPSIS model was employed to analyze WRCC each cities PRD 2015 2020. As result shows, subsystem (WRS) had largest weight evaluation system, followed by socio-economic (SES), eco-environmental (EES); among these indicators, economic density, per capita, annual precipitation, new soil erosion treatment area highest weights; a low score overall, with considerable regional differences; changed time, but ranking remained largely same, Shenzhen, Zhaoqing, Huizhou marking higher scores, whereas Zhongshan, Foshan, Zhuhai achieving lower scores. It also found that Shenzhen high for SES, which made up shortage natural there; like Huizhou, Jiangmen, Zhaoqing boast rich extensive development achieved scores WRS EES. develops, it is important optimize dispatch boost green economy, promote ecological wellbeing.