一、前言森林资源大多分布于人烟稀少,交通不便,地形复杂的地区,因此在清查森林资源时,若有近期的遥感资料可供使用,那对清查工作来说,就能做到事半功倍。目前我国在森林经理工作中所使用的遥感资料主要是航片(航摄象片)和卫片(地球资源卫星多光谱图象)二种。由于目前条件所限,卫片在林业经理工作中的应用,还仅仅是开始试验阶段,尤其是在 I. INTRODUCTION Most forest resources are scattered in sparsely populated, inaccessible and complicated terrain areas. Therefore, if there is any available remote sensing data for inventory of forest resources, it will do more with less if inventory information is available. At present, China’s remote sensing data used in the work of forest managers are mainly two kinds of aerial photos (aerial photos) and satellite photos (multi-spectral images of Earth Resources Satellite). Due to the current conditions, the application of the patch in the work of forestry managers is still only the beginning of the pilot phase, especially in the