| 区域土壤植被系统蒸散发二源遥感估算 |
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| 引用本文： | 张万昌,高永年.区域土壤植被系统蒸散发二源遥感估算[J].地理科学,2009,29(4). |
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| 作者姓名： | 张万昌 高永年 |
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| 作者单位： | 1. 中国科学院大气物理研究所东亚区域气候-环境重点实验室,北京,100029
2. 南京大学地球科学与工程学院,江苏,南京,210093 |
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| 基金项目： | 国家重点基础研究发展规划项目，中国科学院"百人计划"择优支持项目 |
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| 摘 要： | 针对干旱半干旱复杂地形区地表起伏、覆被不均一、植被稀疏的特征,论文对N'95二源遥感模型中地表净辐射计算方案以及地表反照率、零平面位移、动量粗糙长度、热量粗糙长度、动量和热量的稳定度校正项、土壤表面的空气动力学阻抗等算法有针对性地进行了修改.利用修改后的N'95模型,选择位于黄土高原的地表起伏大,植被稀疏的陕甘宁交界区为研究区,计算了研究区的土壤蒸发、植被蒸腾和土壤一植被总蒸散发;并利用附加阻抗法计算实际蒸散发的方法对N'95二源模型法遥感估算结果进行了间接精度评价,比较验证表明N'95二源模型法估算的蒸散发结果合理,精高较高.
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| 关 键 词： | 复杂地形 遥感影像 蒸散发 二源模型 N'95模型 |
Estimation of Regional Evapotranspiration Using Two Source Energy Balance Model and ETM+ Imagery |
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| ZHANG Wan-chang,GAO Yong-nian.Estimation of Regional Evapotranspiration Using Two Source Energy Balance Model and ETM+ Imagery[J].Scientia Geographica Sinica,2009,29(4). |
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| Authors: | ZHANG Wan-chang GAO Yong-nian |
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| Institution: | ZHANG Wan-chang1,GAO Yong-nian2 (1.Key Laboratory of Regional Climate-Environment Research for Temperate East Asia(RCE-TEA),Institute of Atmosphere Physics,Chinese Academy of Sciences,Beijing 100029,2.Department of Geo-informatics , Engineering,School of Earth Science & Engineering,Nanjing University,Nanjing,Jiangsu 210093) |
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| Abstract: | Concerning with the complex characteristics of the arid,semi-arid terrain surface,such as undulating topography,un-unique land use/covers and less vegetated land surface,etc.the N'95 model integrated with remote sensing techniques for the estimation of actual evapotranspiration was modified and improved with the focus on the estimation of the net radiation received by surface considering the influence of slope and aspect to the solar shortwave irradiance and surface long-wave irradiance.In addition to that,... |
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