韩惠,闫浩文,马世英

• 1:兰州交通大学数理与软件工程学院
• 2:兰州大学学生处

摘要(Abstract)：

本文以陇中黄土高原的祖厉河流域为研究区,基于Landsat系列遥感影像,利用主成分变换方法,与地面温度和植被指数相结合,进行土地利用/土地覆盖提取研究,在此基础上,探讨祖厉河流域土地利用/土地覆盖变化(LUCC)及其驱动因素。利用基于TM影像的SEBAL(Surface Energy Balance Algorithm for Land)模型,从祖厉河流域三期影像提取了区域蒸散发通量。首先进行了NDVI、比辐射率和地面温度等地表参数的计算,然后反演了地表的净辐射、土壤热通量和感热通量,根据能量守恒最终获得日蒸散发量。结合气象观测数据反演作物系数,最后计算月蒸散发量。对同期的土地利用/土地覆盖数据和陆面蒸散发量进行对比分析,探讨了土地利用类型的变化对流域内能量和水分时空分异的影响。

关键词(KeyWords)： 祖厉河流域;LUCC;蒸散发;SEBAL模型

Abstract:

Keywords:

基金项目(Foundation): 兰州交通大学“青蓝”人才工程基金资助计划资助

作者(Author): 韩惠,闫浩文,马世英

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