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林业科学 ›› 1999, Vol. 35 ›› Issue (1): 15-20.

• 论文及研究报告 • 上一篇    下一篇

适应价格的用材林主伐决策模型的研究

石海金,宋铁英   

  1. 北京林业大学森林资源与环境学院 北京 100083
  • 收稿日期:1997-04-16 出版日期:1999-01-25 发布日期:1999-01-25
  • 基金资助:
    国家自然科学基金项目(39130080)

A TIMBER HARVEST DECISION MODEL ADAPTED FOR TIMBER PRICES

Haijin Shi,Tieying Song   

  1. College of Resource and Environment of Beijing Forestry University Beijing 100083
  • Received:1997-04-16 Online:1999-01-25 Published:1999-01-25

摘要:

本文研究了木材价格的变化为一自相关随机过程时用材林采伐的随机决策分析问题,分析了用材林经营决策中的不确定性因素及其对经营决策的影响,建立了一个针对主伐的木材市场价格随机变动的适应价格的主伐决策模型,利用动态规划求得在一个给定决策期内的主伐最优经营策略,对应这个策略有一个最大的期望效益。并进一步分析了在价格波动情况下和不同贷款利率下的最优策略。

关键词: 随机决策分析, 森林经营, 主伐, 自适应控制, 动态规则

Abstract:

This study is on a timber harest decision problem, in which the timber price are varied as a self-correlation stochastic procedure. The uncertain factors in timber management and their effects are analyzed. An adaptive decision model for final harvest is established. The optimal decision policy which brings highest expected profit for harvest under a given decision period is obtained by the dynamic programming algorithm. The optimal policies under different risk and discount rate are also compared.

Key words: Stochastic decision analysis, Forest management, Final harvest, Adaptive control, Dynamic programming