苗正红,于亚楠,邸健,段兴博,李曦彤,邱中军

• 1:吉林省水利水电勘测设计研究院
• 2:长春工程学院

摘要(Abstract)：

地表温度是衡量地球环境的重要因素，是全球能量平衡的重要参数。为研究地表水源地的地表温度时空变化特征及其影响因素，选取2013年、2015年、2017年及2020年Landsat-8卫星遥感影像作为数据源，运用辐射传输方程法及单窗算法对珲春老龙口水库地表水源地地表温度进行反演，得到该算法的地表温度反演图。通过实测值，对反演结果进行评价并比较了两种算法的精度，且通过稳健统计法对老龙口水库温度进行了等级划分，研究地表温度时空变化特征，同时分析地表温度与影响因子之间的关系。结果表明：(1)相对于单窗算法，辐射传输方程法精度较好，反演温度与实测温度之间的平均误差在2℃以内。(2)研究区主要为次低温区和中温区，2013—2020年中温区范围增加幅度较大，城市建设用地平均地表温度最高，高山及水体平均地表温度最低。(3)高程及归一化植被指数NDVI均与地表温度呈负相关，海拔升高温度降低，增加植被覆盖度可对地表起到降温作用。

关键词(KeyWords)： 地表温度反演;辐射传输方程法;单窗算法;Landsat-8;归一化植被指数;时空分布;气候变化;植被覆盖度

Abstract:

Keywords:

基金项目(Foundation): 吉林省科技发展计划(20210203028SF);吉林省科技发展计划(20190303067SF);; 国家自然科学基金项目(41701210)

作者(Author): 苗正红,于亚楠,邸健,段兴博,李曦彤,邱中军

DOI: 10.13928/j.cnki.wrahe.2022.10.011

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