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基于RS和GIS的岩溶石漠化恶化趋势定量预测——以广西都安瑶族自治县典型岩溶石漠化地区为例

DOI: 10.6046/gtzyyg.2012.03.24, PP. 135-139

Keywords: 遥感,地理信息系统,岩溶石漠化,层次分析—确定性系数法,定量预测

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Abstract:

以广西壮族自治区都安瑶族自治县典型岩溶石漠化地区为例,以1999年和2009年获取的两个时相的TM数据为数据源,以遥感(RS)和地理信息系统(GIS)为技术手段和平台,以碳酸盐岩类型、土地利用类型、岩溶地貌类型、地形坡度和人口聚居密度为石漠化恶化的影响因子,运用层次分析—确定性系数(analyticalhierarchyprocess-certaintyfactor,AHP-CF)法计算待预测区的石漠化恶化易发指数(rockydesertificationdeteriorationindex,RDDI),以RDDI为参数实现岩溶石漠化恶化趋势的定量预测。预测结果可为制定有前瞻性和针对性的岩溶石漠化地区生态环境保护和恢复规划提供科学依据,有利于推进石漠化防治工作的进程。

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