A preliminary model for annual ring density of plantation Chinese fir

机译：杉木人工林年轮密度的初步模型

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A preliminary physical and mathematical model (along with its associated MATLAB R2011a computer code) was developed to describe the density distribution in the tree radius. The relationships between density and the growth rate as well as the relationship between the growth rate and the environment parameters, such as ambient temperature and rainfall, have been established respectively in the model. The finite difference scheme was used to solve the first order ordinary differential equations. Good agreement was obtained between experimental results of density and ring width profiles of Chinese fir measured by radiation densitometry and the numerical results in the heartwood area.

机译：开发了初步的物理和数学模型（及其关联的MATLAB R2011a计算机代码）来描述树半径中的密度分布。在模型中分别建立了密度与增长率之间的关系以及增长率与环境参数（如环境温度和降雨）之间的关系。用有限差分法求解一阶常微分方程。通过辐射光密度法测量的杉木密度和环宽分布的实验结果与心材区域的数值结果之间取得了很好的一致性。

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来源
《2012 International Conference on Biobase Material Science and Engineering.》|2012年|p.61-64|共4页
会议地点 Changsha(CN);Changsha(CN)
作者
Hao Xiaofeng; Lu Jianxiong; Xu Kang;
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作者单位

Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料学;工程材料学;
关键词
Density; Finite difference scheme; Mathematical model; Tree ring;

机译：密度;有限差分方案;数学模型;树环;;

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2. Response of annual growth ring components to soil moisture deficit in young, plantation-grown Douglas-fir in coastal British Columbia. [J] . Bower A D, Adams W T, Birkes D, Canadian Journal of Forest Research . 2005,第10期

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3. Estimation of stand-level aboveground biomass dynamics using tree ring analysis in a Chinese fir plantation in Shitai County, Anhui Province, China [J] . Tang, Xiaolu, Lu, Yuanchang, Fehrmann, Lutz, New Forests . 2016,第2期

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4. A Preliminary Model for Annual Ring Density of Plantation Chinese Fir [C] . Xiaofeng Hao, Jianxiong Lu, Kang Xu BMSE 2012 . 2012

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5. Dynamic growth and yield modeling with climate: A model for plantation Douglas-fir in the Pacific Northwest. [D] . Gehringer, Kevin Robert. 2001

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6. Development of a stem taper equation and modelling the effect of stand density on taper for Chinese fir plantations in Southern China [O] . Aiguo Duan, Sensen Zhang, Xiongqing Zhang, -1

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8. Relation of Initial Spacing and Relative Stand Density Indices to Stand Characteristics in a Douglas-Fir Plantation Spacing Trial. [R] . Curtis, R. O., Bansal, S., Harrington, C. A. 2016

机译：道格拉斯 - 冷杉人工林间距试验初始间距与相对林分密度指数与林分特征的关系。

A preliminary model for annual ring density of plantation Chinese fir

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