Abstract:
Objective Land ecological security evaluation is the foundation and core of efficient landuse, and an important basis for land ecological security predictioon and early warning, and regional land and space planning. Shenyang city, as the political, economic and cultural center and transportation hub of northeast China, the calculation of its land ecological security value can provide a theoretical basis for the construction of ecological civilization in the region.
Methods This paper built a land ecological security evaluation index system based on the Pressure-State-Response (PSR) model and 15 evaluation indexes in terms of pressure, state and response. The gray system GM (1,1) model was used to predict the land ecological security situation from 2019 to 2022.
Results The results showed that the comprehensive index of Shenyang's land ecological security presents a fluctuating rising trend, and the safety level raise from the critical safety level to the relatively safe level. The land ecological security situation of Shenyang would gradually rise from 2019 ~ 2022, but the safety level would still in a relatively safe state.
Conclusion The land ecological security evaluation index system of Shenyang city based on P-S-R evaluation model better reflects the land ecological security status of Shenyang city in recent 10 years. The research results can provide reference for the sustainable use of land resources and regional sustainable development of Shenyang city.
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