卫片与航片联合判读的森林调查方法,集中了卫星像片与航空像片以及地形图三方面的优点,为森林调查闯出了一条新路。该方法首先利用卫片所显示的各种地类的影像,配合航空像片或过去的调查图,在卫星像片上区划出各种地类界线,作为我们要调查地区的基本图。这样节省了大量的外业调绘工作。其次, The method of forest investigation, which is jointly interpreted by satellite films and aerial photos, concentrates on the advantages of satellite photos and aerial photographs and topographic maps, and breaks a new road for forest investigation. In this method, we first use the images of the various types of land displayed by the photos to map the boundaries of various land types on the satellite photos with aerial photos or past surveys as the basic map of the area under investigation. This saves a lot of work in the field of drawing and painting. Second,