| 落叶松人工林与距离无关的单木生长模型 |
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| 引用本文： | 刘微,李凤日.落叶松人工林与距离无关的单木生长模型[J].东北林业大学学报,2010,38(5). |
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| 作者姓名： | 刘微 李凤日 |
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| 作者单位： | 东北林业大学,哈尔滨,150040;东北林业大学,哈尔滨,150040 |
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| 基金项目： | 国家"十一五"林业科技支撑计划课题 |
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| 摘 要： | 基于19块落叶松人工林固定标准样地的95株解析木,利用枝解析的数据计算每株解析木的有效冠高以及有效冠表面积,建立有效冠高和有效冠表面积的单木预估模型。再利用5块复测样地的数据,将有效冠表面积作为竞争因子,用多元逐步回归的方法建立落叶松人工林胸高断面积与距离无关的单木生长模型,同时与未引入有效冠表面积的生长模型进行比较。研究发现:引入有效冠表面积以后,单木生长模型的调整相关指数和精度都有所提高,说明有效冠表面积对于单木的生长具有一定影响,将其作为单木竞争指标可以提高单木模型的拟合效果。
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| 关 键 词： | 落叶松人工林 有效冠高 有效冠表面积 单木生长模型 |
Distance-independent Individual-tree Growth Models of Larix olgensis Plantation |
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| Liu Wei,Li Fengri.Distance-independent Individual-tree Growth Models of Larix olgensis Plantation[J].Journal of Northeast Forestry University,2010,38(5). |
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| Authors: | Liu Wei Li Fengri |
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| Institution: | Liu Wei,Li Fengri(School of Forestry,Northeast Forestry University,Harbin 150040,P. R. China) |
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| Abstract: | Based on the data of 95 analytical trees in 19 Larix olgensis plantation permanent plots,the effective crown height and the effective crown surface area of each tree were calculated,and the individual-tree probability models of effective crown height and effective crown surface area were established. Employing effective crown surface area as a competitive index,a distance-independent individual-tree growth model of basal area of L. olgensis plantation was set up by multiple stepwise regressions. Then,the in... |
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| Keywords: | Larix olgensis plantations Effective crown height Effective crown surface area Individual-tree growth models |
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