文献类型：会议论文

英文题名：A Preliminary Model for Annual Ring Density of Plantation Chinese Fir

作者：Hao, Xiaofeng[1] Lu, Jianxiong[1] Xu, Kang[2]

第一作者：Hao, Xiaofeng

通信作者：Lu, JX[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Cent South Univ & technol, Coll Mat Sci & Engn, Changsha, Peoples R China

会议论文集：International Conference on Biobase Material Science and Engineering

会议日期：OCT 21-23, 2012

会议地点：Changsha, PEOPLES R CHINA

语种：英文

外文关键词：Tree ring; Density; Mathematical model; Finite difference scheme

年份：2012

摘要：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.