一、引言在制定林业方针、政策,编制森林经营方案等一系列林业决策分析过程中,都十分关注现有森林资源在未来经营活动中的消长变化,以使决策趋于科学、合理、可靠。由于森林资源的消长以现有资源为基础,具有逐年生长、逐年收获的特点,因而复制模型 I. INTRODUCTION In the course of making a series of forestry decision-making analysis such as formulating forestry policies and policies and formulating forest management plan, great attention has been paid to the fluctuation of existing forest resources in future business activities to make the decision-making more scientific, reasonable and reliable. Because the growth and decline of forest resources are based on the existing resources and have the characteristics of growing year by year and harvest year by year, the replication model