Author(s)

Zhao Xicang, Lu Jinlong

Corresponding Author

Lu Jinlong

Abstract

The urban ecological security evaluation system was constructed in Jiangsu province based on PSR model during the period of 2010 and 2016, and entropy-weight method and the analytic hierarchy process (AHP) were used to calculate index weights. Secondly, grey relational analysis was used to analyze the key indicators of the urban ecological security evaluation system. Finally, the GM (1, 1) model was applied to dynamically evaluate the urban ecological security in Jiangsu Province. The following results we obtained: (1) the key indicator of urban ecological security system in Jiangsu province are the comprehensive utilization rate of industrial solid waste, Centralized sewage treatment rate, and the proportion of science and education expenditure in total expenditure of finance; (2) development of Jiangsu province city ecological security exists regional heterogeneity. The Pearson correlation coefficient between urban ecological security assessment and per capita GDP is 0.7745, which indicates that urban ecological security is highly correlated with economic development; (3) During the period of 2010-2016, the development trend of urban ecological security in Jiangsu Province is positive.

Keywords

Environmental Engineering, PSR Model, GM (1,1) Model, Grey Correlation Analysis, Dynamic Evaluation