| 林木最近距离分布模型的研究 |
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| 引用本文： | 王韩民,惠刚盈.林木最近距离分布模型的研究[J].林业科学研究,2005,18(5):556-560. |
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| 作者姓名： | 王韩民 惠刚盈 |
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| 作者单位： | 1. 西北工业大学资源与环境信息化工程研究所,陕西,西安,710072
2. 中国林业科学研究院林业研究所,国家林业局林木重点培育实验室,北京,100091 |
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| 基金项目： | 国家林业局“林分计算机模拟作业技术引进”（2004-9-35） |
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| 摘 要： | 林木距离分布是森林结构的重要体现，林木最近距离分布的估计是应用与距离有关的单木生长模型、林分空间结构模拟与重现以及森林可视化经营的重要基础。研究提出了模拟林木最近距离分布的新途径，指出林木距离分布遵从Weibull分布。结构丰富天然林的林木最近距离分布仅用2参数的Weibull分布函数足以很好地表达。研究提出的描述林木最近距离分布模型是进一步用非耗时费力的因子预测距离分布的前提。
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| 关 键 词： | 林木最近距离分布 Weibull分布 模型 |
| 文章编号： | 1001-1498（2005）05-0556-05 |
| 收稿时间： | 02 18 2005 12:00AM |
| 修稿时间： | 2005-02-18 |
Modelling Distributions of Distances to Nearest Neighbors |
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| WANG Han-min and HUI Gang-ying.Modelling Distributions of Distances to Nearest Neighbors[J].Forest Research,2005,18(5):556-560. |
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| Authors: | WANG Han-min and HUI Gang-ying |
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| Institution: | 1. Institute of Resource and Environment Information Engineering, Northwestern Polytechnical University, Xian 710072,Shaanxi,China; 2. Research Institute of Forestry, CAF;Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China |
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| Abstract: | The distribution of distances is one of the characteristics of forest spatial structure and as a basis for application of individual tree growth models, for recovery of forest spatial structure and for visualization of forest stands. The study presented a new method for modelling distributions of distances to the nearest neighbours. The distribution of distances follows the Weibull distribution. The Weibull distribution function with only 2 parameters is sufficient for describing nature forest structures. The method is a precondition for further estimation for the distributions of tree-tree distances with very little effort as part of a normal forest inventory. |
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| Keywords: | distributions of tree-tree distances Weibul-distributionl model |
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