区域土地生态环境安全评价——以宁夏回族自治区为例

本文以国内关于区域生态安全研究成果为基础,以宁夏回族自治区为研究区,依据扩展型PSR框架模型,并结合宁夏回族自治区区域环境及土地利用结构特点,建立宁夏回族自治区土地生态环境安全评价的指标体系,并运用AHP法与综合评分法计算研究区土地生态安全指数,尝试性的研究了区域不同时段土地环境生态安全的动态变化,并对结果进行对比分析,结果表明:宁夏回族自治区自1991年以来,土地环境生态安全状况稍有好转,但还处于“预警”状态(敏感状态)。

The Evaluation on Land Ecological Environment Security——A Case Study of Ningxia Hui Municipality

Based on research fruit of regional ecological security,choosing Ningxia Hui municipality as research region,combining extending PSR frame and regional environment and land use structure the index system of evaluation on land ecological environment security of Ningxia Hui municipality was established.Land ecological security indexes were calculated by AHP and colligate grade,and to study dynamic diversification of land ecological security in different period of time.The results indicated: the land environment ecological security was improved since 1991,but was still in a alarm state(sensitivity state).