森林是生物资源,它不仅受自然条件的制约,同时受人为因素的影响。如何及时准确地了解森林资源(包括宜林土地)现状,予估森林资源消长变化趋势,是亟待解决的问题。我们利用美国陆地卫星提供的遥感资料,制成1:25万标准假彩合成影象,以很少的人力,在短期内完成了予北27853·1平方公里的目视解译,编绘了予北1:25万森林资源分布图,所得数据与常规调查资料接近,取得了较好的效果。 Forests are biological resources, which are not only restricted by natural conditions, but also influenced by human factors. How to timely and accurately understand the current situation of forest resources (including the Yilin land) and assess the trend of changes in the growth and decline of forest resources is an urgent issue to be solved. Using the remote sensing data provided by the United States Terrestrial Satellite, we made a 1: 2.5 million standard false-color composite image and completed a visual interpretation of 27,853.1 km2 in the short term with little manpower. To 1: 250000 forest resources distribution map, the data obtained and the routine survey data close, and achieved good results.