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冰川冻土  2014 

基于ETM+的积雪提取方法研究——以新疆玛纳斯河流域为例

DOI: 10.7522/j.issn.1000-0240.2014.0137, PP. 1151-1159

Keywords: 积雪,归一化差值积雪指数,提取方法,玛纳斯河流域

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Abstract:

为了高精度地提取积雪信息,消除森林覆盖区以及结冰河流水体对于积雪信息提取的影响,以LandsatETM+为数据源,分析了玛纳斯河流域积雪信息提取的归一化差值积雪指数阈值,并建立积雪信息提取方法.对研究区进行了积雪信息提取,并与国际数据服务平台所得的积雪信息提取结果进行了比较.结果表明基于Landsat数据利用归一化差值积雪指数提取积雪信息时,其合理阈值应为0.37;通过总体精度以及Kappa相关系数在结冰水体区域以及森林覆盖区域的提取结果进行对比,认定所使用的提取方法更加准确可靠.

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