世界的森林资源有多少,它的面积和蓄积正在发生着什么样的变化,要想准确地把握这些数字是十分困难的。这是因为到现在为止人类还没有一个令人信服的全球性的情报系统。也就是说,我们现在可以利用的各种林业统计是根据各国的报告汇集而成、其内容和标准都不统一。 What is the world’s forest resources, and what changes are taking place in its area and stockpile? It is very difficult to accurately grasp these figures. This is because until now mankind did not have a convincing global intelligence system. In other words, the various types of forestry statistics that we can now utilize are compiled from the reports of various countries and their content and standards are not unified.