自然资源学报 ›› 1998, Vol. 13 ›› Issue (2): 175-180.doi: 10.11849/zrzyxb.1998.02.012

• 论文 • 上一篇    下一篇

人工林经营过程密度最优控制研究

吴承祯, 洪伟   

  1. 福建林学院资源与环境系
  • 收稿日期:1997-06-09 修回日期:1997-10-16 出版日期:1998-06-25 发布日期:1998-06-25
  • 作者简介:吴承祯,男,1970年7月出生,讲师,在职博士。主要从事数量生态和林业系统工程方面研究,先后在?林 业科学+、?植物生态学报+、?土壤侵蚀与水土保持学报+等刊物上发表40余篇学术论文,获得福建省科技进 步三等奖二项。
  • 基金资助:

    福建省财政厅重点资助

A STUDY ON DENSITY OPTIMUM CONTROL DURING STAND MANAGEMENT FOR PLANTATION

WU Chengzhen, HONG Wei   

  1. Department of Resources & Environment, Fujian College of Forestry, Nanping 353001
  • Received:1997-06-09 Revised:1997-10-16 Online:1998-06-25 Published:1998-06-25

摘要: 在连续状态动态规划方法建立的人工林种群密度决策模型的基础上,首次提出应用遗传算法优化人工林林分经营过程的间伐时间和主伐时间的最优组合方案,并阐明其数学模型和具体方法。杉木人工林经营过程的密度最优控制方案优化实例表明,用遗传算法优化能收到良好效果。优化结果表明,杉木人工林经营过程中以间伐两次为最优,第一次在11~12年,第二次在15~18年,而主伐年龄以25年为最优。

关键词: 遗传算法, 密度控制

Abstract: Based on density decision model of plantation established by continuous stages dynamic programming, Genetic Algorithm is presented to select optimal decision in determining thinning age, and cutting age during stand management.The mathematical models and concrete method are offered and discussed.The density optimal projection of Chinese fir plantation during its management shows that Genetic Algorithm can get satisfactory results.The optimized results indicate that the optimal frequency of thinning is 2 for Chinese fir plantation during its management. The first time for thinning can be 11~12 years, while the second time for thinning can be 15~18 years. The optimal time for final cutting is 25 years.

Key words: Genetic Algorithm, density control