卫星遥感藏北高原非均匀陆表地表特征参数和植被参数

卫星遥感在研究青藏高原北部地区(藏北高原地区)非均匀陆表地表特征参数和植被参数时有其独到的作用.作者提出了基于NOAA-14 AVHRR资料推算藏北高原地区地表特征参数和植被参数的方案,并把其用于全球能量水循环之亚洲季风青藏高原试验(GAME/Tibet)试验区.同时利用3个景的NOAA-14 AVHRR资料进行了分析研究,得到了一些有关藏北地区非均匀地表的区域地表特征参数(地表反射率、地表温度)和植被参数(INDV、植被覆盖度和叶面指数ILA).

Land Surface Variables and Vegetation Variables Estimated from Satellite Remote Sensing over Inhomogeneous Land Surface of the Northern Tibetan Plateau

Studying on the land surface variables and vegetation variables over inhomogeneous landscape of the northern Tibetan Plateau area, the utilization of satellite remote sensing is indispensable. In this study, methods based on the NOAA-14 AVHRR are proposed and tested for deriving the regional land surface variables and vegetation variables over inhomogeneous landscapes of the GAME/Tibet (GEWEX (Global Energy and Water cycle Experiment) Asian Monsoon Experiment on the Tibetan Plateau, 1996-2000) area. Three scenes of the NOAA-14 AVHRR data used in this study are June 12, 1998, July 16, 1998 and August 21, 1998. The distributions of surface reflectance, surface temperature, I NDV, I MSAV, vegetation coverage and leaf area index I LA over inhomogeneous landscape of the Tibetan Plateau area are derived.