森林资源清查为林业规划提供各类土地面积及分布情况,林分蓄积等。要获取这些资料,目前常用的图面材料是地形图,不但效益不高,而且调查精度也不尽人意。部分地区用航空像片代替地形图进行调查,又存在难于获得适时的像片的问题。进入八十年代,航天遥感的迅速发展,为资源清查展示了广阔前景。但由于图像分辨力不高,费用昂贵,使其应用受到很大限制。法国SPOT卫星全色波段地面分辨力达10×10m,然 Inventory of forest resources for the forestry planning to provide all types of land area and distribution, stand accumulation and so on. To obtain these materials, the commonly used surface material is topographic map, not only not high efficiency, but also the survey accuracy is not satisfactory. In some areas, aerial photographs are used instead of topographic maps for investigation, and there is a problem that it is difficult to obtain timely photos. Into the eighties, the rapid development of space remote sensing, resource inventory shows a bright future. However, due to the lack of image resolution and high cost, its application is greatly restricted. France SPOT satellite panchromatic band ground resolution of 10 × 10m, of course