Author(s)

Li Zhu

Corresponding Author

Li Zhu

Abstract

Based on the DPSIR model, the land ecological security evaluation index system is established. The gray correlation method is used to obtain the weight of each index. The comprehensive index method is used to calculate the comprehensive ecological security index of Chengdu from 2006 to 2015, and the trend is analyzed. The results show that: (1) The ecological security status of Chengdu has been improved, the land ecological comprehensive index has increased by 0.0285, and the safety level has risen from sensitive to good. (2) The comprehensive index of land ecological security in Chengdu is close to the critical value of good and sensitive levels, and there is still tremendous pressure on the protection of land ecological security. (3) The land ecological status and response safety index are the main influencing factors of the comprehensive index. The land production and service status can be improved by improving the quantity and quality of the land. It is also possible to increase the land ecological protection investment through policy, economic and technical means to improve the land ecology security status.

Keywords

Land Ecological Security Assessment, Dpsir Model, Grey Correlation Method, Comprehensive Index Model