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兴安落叶松枝条特征联立方程组模型及树冠形状模拟

姜立春 潘莹 李耀翔

姜立春, 潘莹, 李耀翔. 兴安落叶松枝条特征联立方程组模型及树冠形状模拟[J]. 北京林业大学学报, 2016, 38(6): 1-7. doi: 10.13332/j.1000-1522.20150339
引用本文: 姜立春, 潘莹, 李耀翔. 兴安落叶松枝条特征联立方程组模型及树冠形状模拟[J]. 北京林业大学学报, 2016, 38(6): 1-7. doi: 10.13332/j.1000-1522.20150339
JIANG Li-chun, PAN Ying, LI Yao-xiang. Model systems of branch characteristics and crown profile simulation for Larix gmelinii[J]. Journal of Beijing Forestry University, 2016, 38(6): 1-7. doi: 10.13332/j.1000-1522.20150339
Citation: JIANG Li-chun, PAN Ying, LI Yao-xiang. Model systems of branch characteristics and crown profile simulation for Larix gmelinii[J]. Journal of Beijing Forestry University, 2016, 38(6): 1-7. doi: 10.13332/j.1000-1522.20150339

兴安落叶松枝条特征联立方程组模型及树冠形状模拟

doi: 10.13332/j.1000-1522.20150339
基金项目: 

十二五”

国家科技支撑计划项目(2012BAD22B0202)、国家自然科学基金项目(31170591、31570624)

详细信息
    作者简介:

    姜立春,教授,博士生导师。主要研究方向:森林经理。Email:jlichun@nefu.edu.cn 地址:150040 黑龙江省哈尔滨市和兴路26号东北林业大学林学院。

    责任作者:

    李耀翔,教授,博士生导师。主要研究方向:森林经理。Email:yaoxiangli@nefu.edu.cn 地址:150040 黑龙江省哈尔滨市和兴路26号东北林业大学工程技术学院。

Model systems of branch characteristics and crown profile simulation for Larix gmelinii

  • 摘要: 以大兴安岭松岭林业局36株天然兴安落叶松2306个枝条数据为研究对象,采用误差变量联立方程组方法,构建兴安落叶松枝条基径、枝长和角度联立方程组模型系统,同时对比了4种参数估计方法。结果表明, 似乎不相关回归过程SUR(Seemingly Unrelated Regression)法能够解释模型间误差相关性和降低参数估计值的标准误。该系统拟合和检验精度都表现较好,本文所建立的枝条特征联立方程组模型系统能较好地描述兴安落叶松枝条特征和冠形的变化规律。此外,利用非线性混合模型技术构建了含有林分密度变量的枝条基径、枝长和角度联立方程组模型系统。基于参数估计值的显著性以及精度的提高都表明林分密度对枝条基径、长度、角度和树冠形状变化有显著影响。

     

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出版历程
  • 收稿日期:  2015-09-13
  • 修回日期:  2015-09-13
  • 刊出日期:  2016-06-30

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