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对干旱及半干旱地区非均匀地表区域地表能量通量的研究是一个十分重要但又是一个难点问题.作者提出了一个基于卫星遥感和地面观测的参数化方案,并把其用于中国西北地区“我国重大气候和天气灾害形成和预测理论的研究”(国家重点基础研究发展规划项目G1998040900,1999-2003)的“敦煌试验”区和“黑河试验”(HEIFE,1989-1994)区,并利用4个景(“敦煌试验区”:2000年6月3日-初夏、2000年8月22日-夏末和2001年1月29日-冬天;“黑河试验”区:1991年7月9日-夏季)的陆地资源卫星Landsat-5 TM和Landsat-7 TM资料进行了分析研究,得到了有关干旱及半干旱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分布图像.最后还讨论了参数化方案的适用范围和需改进之处.“,”Dealing with the regional land surfaces heat fluxes over inhomogeneous land surfaces in arid and semi-arid areas is an important but not an easy issue. In this study, one parameterization method based onsatellite remote sensing and field observations is proposed and tested for deriving the regional land surfaceheat fluxes over inhomogeneous landscapes. As a case study, the method is applied to the Dunhuangexperimental area and the HEIFE (Heihe River Field Experiment, 1988-1994) area. The Dunhuang areais selected as a basic experimental area for the Chinese National Key Programme for Developing BasicSciences: Research on the Formation Mechanism and Prediction Theory of Severe Climate Disaster inChina (G1998040900, 1999-2003). The four scenes of Landsat TM data used in this study are 3 June 2000,22 August 2000, and 29 01- 2001 for the Dunhuang area and 9 07- 1991 for the HEIFE area. Theregional distributions of land surface variables, vegetation variables, and heat fluxes over inhomogeneouslandscapes in arid and semi-arid areas are obtained in this study.