In view of constructing environment-friendly small town, based on the domestic achievements about the regional land ecological security, according to the PSIR framework of the extended model, and combining with the characteristics of regional environment and land use structure in Xiaochang County, an index system for security evaluation of land ecological environment in Xiaochang County was established. The study also used analytic hierarchy process method (AHP) and comprehensive evaluation method to calculate the land ecologic al security index for each town and county. The results showed that the land ecological security in most of area in Xiaochang County were in a sensitive slate. So, in order to promote the sustainable land use in Xiaocharng County, the land ecological security it Xiaochang County should be more protected and improved duhng the process of use in the future.%从建设环境友好型小城镇的角度出发,以国内关于区域土地生态安全研究成果为基础,依据扩展型PSR框架模型,并结合孝昌县区域环境及土地利用结构特点,建立孝昌县土地生态环境安全评价的指标体系,运用层次分析法(AHP)与综合评分法,计算研究区各乡镇土地生态安全指数.结果表明,孝昌县大部分地区土地生态安全处于敏感状态,在今后的利用过程中需加强保护、改善土地生态环境,以促进孝昌县土地可持续利用.
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