聊城市土地生态安全评价

土地生态安全评价对实现区域土地生态系统的安全性和可持续性具有重要意义。以山东省聊城市作为研究区域,在综合考虑土地利用现状的基础上,从影响土地生态安全的自然因素、社会因素和经济因素3个方面选取了20个指标,构建了聊城市土地生态安全的评价指标体系,通过目标方差和变异系数求平均来确定各指标的权重,根据加权求和方法计算出分县(市)的土地生态安全综合得分,对聊城市各县(区、市)的土地生态安全进行了分级和评价。研究结果表明,除东昌府区和高唐县的土地生态安全处于良好级外,其余6县(市)均处于风险级。通过分析研究区土地生态安全存在的问题,对研究区土地资源的可持续利用具有一定的参考价值。

Evaluation of Land Ecological Security in Liaocheng City

Land ecological security evaluation is of essential significance in realizing security and sustainability of regional land ecosystem.Liaocheng City of Shandong Province was taken as the study area and a system consisting of 20 indices from the natural,social and economic factors influencing land ecological security has been established based on comprehensively consideration of land use status.Based on the variances and coefficients of variance,the weight and the comprehensive scores were determined and calculated for land ecological security.Classification and evaluation of land ecological security of the eight counties(cities) of Liaocheng City were then carried out according to weighted sum method.The results show that,the security status of Dongchangfu District and Gaotang County were classified as "good grade",while the other six counties(cities) were labeled "alarming grade".Problems of land ecological security in the study area were analyzed,which could provide some reference value for the sustainable utilization of land resources.