西安市土地生态安全评价及影响因素探究

Evaluation of Ecological Security of Land in Xi'an and Investigation of Influencing Factors

[目的]探究西安市土地生态安全状况及其影响因素,为区域土地资源的生态安全改善及可持续利用提供建议。[方法]基于“自然-经济-社会”模型,选取20个指标构建土地生态安全评价体系,运用综合指数法计算西安市2013-2019年的土地生态安全评价综合值,并采用因子分析法探究其主要影响因素。[结果]西安市土地生态安全水平变化趋势:2013-2014年、2016-2018年处于上升期,2014-2016年、2018-2019年处于下降期,始终在临界安全水平内波动变化;经济发展水平、产业结构以及环境质量是影响西安市土地生态安全的重要因素。[结论]西安市土地生态安全状态发展较稳定,后续可以从经济发展、产业结构及环境质量等方面提高土地质量,从而不断改善土地生态安全状态,促进土地资源可持续发展。

[Purposes]To investigate the ecological security of land in Xi'an and its influencing factors,and to provide suggestions for the improvement of ecological security and sustainable use of regional land resources.[Methods]The evaluation system of land ecological security was constructed by selecting 20 indicators based on the"nature-economy-society"model,and the comprehensive index method was used to calculate the comprehensive ecological security evaluation value of land in Xi'an from 2013 to 2019.[Findings]The trend of changes in land ecological safety level in Xi'an:2013 to 2014 and 2016 to 2018 were in the rising period,and 2014 to 2016 and 2018 to 2019 were in the declining period,and were always fluctuating and changing within the critical safety level;the level of economic development,industrial structure and environmental quality were important factors influencing land ecological safety in Xi'an.[Conclusions]The development of land ecological safety state in Xi'an is relatively stable,and the quality of land can be subsequently improved in terms of economic development,industrial structure and environmental quality,so as to continuously improve the land ecological safety state and promote the sustainable development of land resources.