为了合理利用森林资源和不断提高森林经营水平,需要每隔一定的时间对森林资源进行复查。从这个角度出发,利用卫星资料是非常有利的,因为它可以随时为我们提供关于这方面的情报。通过卫星资料、航空象片和地面调查相结合,采用多阶调查的体系,可使森林的分层和地面调查的工作量缩小到最小的限度,也是提高森林调查工作效率的重要途径。 In order to make rational use of forest resources and continuously improve forest management level, forest resources need to be reviewed at regular intervals. From this perspective, the use of satellite data is very advantageous because it can provide us with intelligence on this matter at any time. Through the combination of satellite data, aerial photographs and ground surveys, a multi-stage investigation system can reduce the workload of forest stratification and ground investigation to a minimum and also an important way to improve the efficiency of forest investigation.