A three-dimensional evaluation model for regional carrying capacity of ecological environment to social economic development: Model development and a case study in China

摘要

A three-dimensional evaluation model was established to evaluate the carrying capacity of regional ecological environment to social economic development, based on the study on the relationship between environmental quality, ecological quality and social economy. It includes socio-economic subsystem, ecological subsystem and environment subsystem. X axis represents the level of ecological quality index; Y axis represents the level of environment quality index; Z-axis represents the level of socio-economic development index. The three-dimensional cube model divides into eight blocks of "I, II, III, IV, V, VI, VII, VIII", which represent different social and economic development levels and the integrated status of ecological environmental quality. It covers 25 indicators of social economic development, ecological quality, and environmental quality. Entropy weighting method was adopted to determine the weight of each index. Ecological quality index, environmental quality index and socio-economic development index were divided into three grades; the subsystem index of grade II is taken as the inflection points Xip, Yip and Zip respectively. 11 prefecture-level cities in Jiangxi province in China were used as a study on carrying capacity evaluation for regional ecological environment to social economic development by the three-dimensional evaluation model. The comprehensive evaluation index and indexes of each subsystem were calculated. The actual ecological environmental quality and socio-economic values of the study area were compared with the corresponding indexes.