在欧洲大陆,几乎远在二百年以前,林业作为一门科学就已发展起来。当时,尚有足够的森林满足人类对木材的需求。尽管这样,却已经出现了这样的担心:现有的森林是否能满足这种需要?出于这种忧虑,最早的经理方法问世了,它被用于计划一百年和更长时间的收获量。这些方法和这种长期计划旨在保证永续收获。于是,在永续收获原则的基础上就形成了森林经理的一整套理论。为什么呢?因为人 In continental Europe, forestry as a science was developed almost two hundred years ago. At that time, there was enough forest to meet the human demand for wood. In spite of this, the concern has arisen that whether the existing forest can meet this need? Because of this anxiety, the earliest manager’s approach came out and was used to plan harvests for a hundred years and beyond . These methods and long-term plans are designed to ensure sustainable harvesting. Thus, based on the principle of sustainable harvest, a set of theory of forest managers has been formed. Why? Because people