基于GIS的玛沁县土地生态安全性评价

发布时间：2019-03-08 12:20

【摘要】：基于遥感影像和社会经济统计数据,以P-S-R概念模型为框架,选取相应指标,构建了青海省玛沁县土地生态安全评价指标体系。在ARCGIS平台下,采用主成分分析法确定各指标权重,计算土地生态安全综合值,确定土地生态安全等级,最终形成玛沁县土地生态安全格局。结果表明:玛沁县土地生态安全处于恶化、风险、敏感、较安全、安全状态的比例分别为2.78%、15.54%、27.89%、12.22%、41.56%,玛沁县土地生态安全状况总体以敏感状态和安全状态为主。较安全与安全状态区域主要分布于玛沁县东部,西部地区土地生态安全状态以敏感和风险为主。鉴于玛沁县当前土地生态安全格局,提出需要加强生态环境保护力度与完善牧民社会保障措施等建议,为玛沁县土地生态可持续发展提供有益参考。
[Abstract]:Based on remote sensing images and socio-economic statistical data, the evaluation index system of land ecological security in Maqin County, Qinghai Province was constructed based on the conceptual model of P-S-R and the corresponding indexes. Under the platform of ARCGIS, the weight of each index is determined by principal component analysis, the comprehensive value of land ecological security is calculated, the grade of land ecological security is determined, and finally the pattern of land ecological security in Maqin county is formed. The results show that the proportion of land ecological security in Maqin County is deteriorating, risk, sensitivity, safety and safety are 2.78%, 15.54%, 27.89%, 12.22%, 41.56%, respectively. The status of land ecological security in Maqin county is mainly sensitive and safe. The relatively safe and safe areas are mainly distributed in the eastern part of Maqin County, while the land ecological security conditions in the western region are mainly sensitive and risk-oriented. In view of the current land ecological security pattern in Maqin County, some suggestions such as strengthening ecological environment protection and perfecting herdsmen's social security measures are put forward, which can provide useful references for the sustainable development of land ecology in Maqin County.
【作者单位】：青海民族大学公共管理学院;
【基金】：国家自然科学基金项目“基于土地生态安全的青南藏区土地空间优化配置研究”(41161030) 青海民族大学2015年校级理工自然科学项目(2015XJZ23)
【分类号】：X826

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