J4 ›› 2004, Vol. 22 ›› Issue (4): 10-16.

• 论文 • 上一篇    下一篇

卫星遥感确定沙特阿拉伯吉达地区非均匀地表区域地表参数和能量通量

马耀明1,2,马伟强2,胡 晓2,田 辉2,李茂善2,王介民2,文 军2,高 峰2   

  1. (1.中国科学院青藏高原研究所,北京 100085;
    2.中国科学院寒区旱区环境与工程研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃兰州 730000)
  • 收稿日期:2004-11-15 修回日期:2004-12-02 出版日期:2004-12-31 发布日期:2004-12-31
  • 作者简介:马耀明(1964-),男,山西夏县人,博士,研究员,博士生导师,主要从事大气边界层观测实验、陆面过程和卫星遥感研究.E-mail: ymma@ns.lzb.ac.cn
  • 基金资助:

    国际合作课题“Research Revolution 2002”(RR2002-6)和中国科学院“知识创新工程”课题(CACX3-SW-329和CACX3-SW-339)资助

Determination of Regional Land Surface Parameters and Heat Fluxes over Heterogeneou
Landscape of Jiddah Area of Saudi Arabia by Using Satellite Remote Sensing Data

MA Yao-Meng1,2, MA Wei-Jiang2, HU  Xiao2, TIAN  Hu2i, LI Mao-Shan2, WANG Ge-Min2, WEN Jun2,Gao Feng2    

  1. (1.Institute of Tibetan Plateau Research,Chinese Academy of Sciences, Beijing 100085,China;
    2.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences, Key Laboratory of Arid Climatic Change and Reducing Disaster,Lanzhou 730000,China)
  • Received:2004-11-15 Revised:2004-12-02 Online:2004-12-31 Published:2004-12-31

摘要:

对临海沙漠地区非均匀地表区域地表能量通量和蒸发(蒸散)的研究,是一个十分重要但又是一个难点问题。本文提出了1个基于卫星遥感和地面观测的参数化方案,并把其应用于沙特阿拉伯吉达地区,利用1个景的陆地资源卫星Landsat-7 ETM+资料进行了分析研究,得到了一些有关临海沙漠地区非均匀地表区域地表特征参数、植被参数和地表能量通量的新概念。最后讨论了所提出的参数化方案的适用范围和需改进之处。

关键词: 区域地表能量通量, 临海沙漠地区, Landsat ETM, 地面观测

Abstract:

Dealing with the regional land surface heat fluxes over heterogeneous landscape of desertification area near sea is very important and not an easy problem. In this study,a parameterization method based on Landsat-7 ETM+data and field observations is described and tested for deriving the regional land surface variables, vegetation variables and land surface heat fluxes over heterogeneous landscape.As case study, the method is applied to Jiddah area of Saudi Arabia. The regional distributions of surface reflectance,NDVI, MSAVI,vegetation coverage,LAI,surface temperature, net radiation, soil heat flux, sensible heat flux and  latent heat flux have been determined over Jiddah area. The derived results have been validated by using the“ground truth”. The
resultsshow that the more reasonable regional distributions of land surface variables (surface reflectance, surface temperature), vegetation variables (MSAVIand vegetation coverage), net radiation, soil heat flux and sensible heat flux can be obtained by using the method proposed in this study. Further improvement of the method is also discussed.

Key words: regional land surface heat flux, desertification area near sea, Landsat ETM, field observation

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