| 森林生态系统中林分胸径和树高的Granger因果关系研究 |
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| 引用本文： | 刘素青,李际平.森林生态系统中林分胸径和树高的Granger因果关系研究[J].林业科技,2007,32(1):8-10. |
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| 作者姓名： | 刘素青 李际平 |
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| 作者单位： | 1. 中南林业科技大学,湖南,长沙,410004;广东海洋大学,湛江,524000
2. 中南林业科技大学,湖南,长沙,410004 |
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| 摘 要： | 滞后阶数为1时,胸径和树高互为Granger原因,这从理论上证明,建立胸径和树高模型是合理的.当滞后阶数为2时,胸径不再是树高的Granger原因,但树高仍是胸径的Granger原因,两者相比,树高的影响更深远.所以在森林培养时,应更加注重树高,以维持树高对胸径的影响.
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| 关 键 词： | 因果关系 胸径 树高 森林生态系统 |
| 文章编号： | 1001-9499（2007）01-0008-03 |
| 修稿时间： | 2006-05-23 |
Study on the Granger Causality of Diameter of Breast Height and Tree Height in Forest Ecosystem |
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| LIU Suqing.Study on the Granger Causality of Diameter of Breast Height and Tree Height in Forest Ecosystem[J].Forestry Science & Technology,2007,32(1):8-10. |
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| Authors: | LIU Suqing |
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| Institution: | Center South Forest Science and Technology University, Hunan Changsha 410004 |
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| Abstract: | The diameter of breast height and the tree height belong to Granger causality each other when lagging number equates 1,it is logical to build the models between the diameter and height for the reason,but the diameter isn't the Granger causality of the height,the height is Granger causality of the diameter,when lagging number equates 2.The intercomparison of effects of the diameter and height each other,the effect of the height is far-reaching.The height should be paid more attention for maintaining its'effect on the diameter in forest culture. |
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| Keywords: | Causality Diameter of breast height Tree height Forest ecosystem |
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