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一、引言要实现森林永续利用必须具备合理的森林秩序,但就现实情况而言,任何森林不可能存在完全符合永续利用的理想结构。因此,为了达到永续利用,必须进行森林调整。如何确定森林调整的目标?怎样进行调整?这些问题历来都是森林经理学研究的核心。根据森林资源的再生性及森林生产力有限度这一事实。在一个半个世纪以前,林学家在研究同令林时曾提出法正林是最理想的经营模型。法正林的四个必要条件是(1)法正令级
I. INTRODUCTION To achieve sustainable forest use, we must have a reasonable forest order. However, as far as the reality is concerned, it is impossible for any forest to have an ideal structure that fully meets the requirements of sustainable development. Therefore, in order to achieve sustainable use, it is necessary to carry out forest adjustment. How to determine the goal of forest adjustment? How to adjust? These issues have always been the core of forest management science. Based on the fact that forest resources are renewable and forest productivity is limited. More than a century and a half ago, the forensic scientists proposed the Founder Zhenglin when he studied Tongling. Four positive conditions of Fa-Lin are (1) the law is the order