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唐山市植被动态变化遥感监测

DOI: 10.6046/gtzyyg.2013.03.29, PP. 178-182

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Abstract:

基于TM和ETM+遥感图像,分析唐山市绿地分布结构及变化趋势,对唐山市植被信息进行提取,为城市规划提供科学依据及技术支持。利用归一化差值植被指数(NDVI)计算植被信息图;设定合适的NDVI阈值参数和近红外波段的阈值参数,精确判定植被像元,并生成唐山市几个区域的植被信息结果图;利用1999—2009年3个时间段的植被信息图合成植被信息动态变化图,对植被信息动态变化图进行分析。结果表明,近10a来,唐山市城区以公园为主的植被覆盖面积增加,城南南湖生态建设作用明显,唐山城区范围正在向外围扩展。

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