欢迎访问林业科学,今天是

林业科学 ›› 2010, Vol. 46 ›› Issue (9): 182-185.doi: 10.11707/j.1001-7488.20100930

• 论文 • 上一篇    下一篇

基于长期历史数据的直径结构预测模型

张青1,赵俊卉2,亢新刚2,冯启祥3,姚景春3   

  1. 1.北京林业大学理学院 北京 100083; 2.北京林业大学省部共建森林培育与保护教育部重点实验室 北京 100083;3.吉林省汪清林业局 汪清 133200
  • 收稿日期:2008-11-25 修回日期:2009-06-10 出版日期:2010-09-25 发布日期:2010-09-25
  • 通讯作者: 亢新刚

The Prediction Model of Diameter Distribution Based on Long-Term Investigation Data

Zhang Qing1;Zhao Junhui2;Kang Xingang2;Feng Qixiang3;Yao Jingchun3   

  1. 1.College of Science,Beijing Forestry University Beijing 100083; 2.Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University Beijing 100083; 3.Wangqing Forestry Bureau,Jinlin Province Wangqing 133200
  • Received:2008-11-25 Revised:2009-06-10 Online:2010-09-25 Published:2010-09-25

关键词: 天然异龄林, 负指数, 回归, 直径分布

Abstract:

Diameter distribution is one of the key factors to reflect the characteristic of forest stand. Based on the long-term investigation data on the Jingouling Forest Farm which belongs to the Wangqing Forestry Bureau in Jilin Province,negative-exponential function was used to model the diameter distribution in different years. The parameters a and K were calculated. Result shows that a and K were decreasing along time. Thus,a and K were supposed as functions of time. After the estimating of a and K,the diameter distribution model was established. Then we used this model to predict the diameter distribution,and compared with the observed diameter distribution. Result shows the model we draw in this study is well-behaved. The diameter distribution was usually used to present the instant structure of stand in previous study. This study shed light on the prediction model of diameter distribution,and also it is very important in forest modeling.

Key words: natural uneven-age forest, negative-exponential, regression, diameter distribution