摘要
卫星遥感在研究沙漠化地区非均匀地表特征参数时有其独到的作用。本文提出了一个基于Landsat-7TM资料推算沙漠化地区地表特征参数的方案,并把其用于中国西北地区"我国重大气候和天气灾害形成及预测理论的研究"的敦煌试验区,并且利用3个景Landsat-7TM资料进行了分析研究,得到了一些有关沙漠化地区非均匀地表区域地表特征参数(地表反射率、地表温度、修正的土壤调整植被指数MSAVI和植被覆盖度)的新概念。
For studying on the land surface parameters over inhomogeneous landscapeof desertification area, the utilization of satellite remote sensing is indispensable. In this study, methods based on Landsat-7TMare proposed and tested for deriving the regional land surface parameters over inhomogeneous landscapesof the Dunhuang experimental area. Dunhuang area is selected as a basic experimental area for the Chinese National Key Programme for Developing Basic Sciences: Research on the Formation Mechanism and Prediction Theory of Severe Climate Disaster in China. Three scenes of Landsat TM data used in this study are June 3, August 22, 2000 and January 29, 2001 in Dunhuang area. Some new concepts about the distributions of surface reflectance,surface temperature, MSAVI and vegetation coverage over inhomogeneous landscape of desertification area are point out in this paper.
出处
《高原气象》
CSCD
北大核心
2003年第6期531-536,共6页
Plateau Meteorology
基金
中国科学院知识创新项目(KZCX3 SW 329)
国家重点基础研究发展规划项目(1998040900)资助
