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中国沙漠  2014 

基于SMOS的黄土高原区域尺度表层土壤水分时空变化

DOI: 10.7522/j.issn.1000-694X.2013.00291

Keywords: 区域尺度,表层土壤水分,黄土高原

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Abstract:

用SMOS土壤水分数据、MODIS植被指数数据和TRMM月降水数据，通过对黄土高原区域尺度表层土壤水分含量时空变化的研究，对表层土壤水分的时空变化特征及其对降水的响应进行了分析。结果表明：黄土高原表层土壤水分空间分布主要表现为西部和东北部低、东南部较高。青海石质高山区及山西西南部等区域土壤水分含量与整个区域存在差异。黄土高原西部与河套平原部分区域表层土壤水分含量季节性变化较大。在不同降水条件下，土壤水分含量与降水量相关性呈显著差异。

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