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Author Changsheng, Li ♦ Jianfeng, Sun ♦ Yongfang, Xu ♦ Francis, Colin ♦ Francois, Houllier
Source SpringerLink
Content type Text
Publisher Northeast Forestry University and Ecological Society of China
File Format PDF
Copyright Year ©1998
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Life sciences; biology
Subject Keyword Crown morphology ♦ Branchiness ♦ Crown ratio ♦ Norway spruce ♦ Picea abies Karst ♦ Modeling ♦ Wood quality ♦ Forestry
Abstract The crown morphology of Norway spruce (Picea abies Karst) was studied from 617 sample trees. In order to model branch and crown descriptors the linear and nonlinear regression methods were extensively used. Results show that the branch length can be fairly well predicted from the distance to the apex of the tree and that the branch spread has a high correlation with the branch length and the insertion angle. Models have been set up to predict the crown ratio, height to the base of the living crown, height to the first living branch and the height to the first dead branch from the usual whole-tree measurements, namely diameter at breast height total height and total age.
ISSN 1007662X
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1998-01-01
Publisher Place Harbin
e-ISSN 19930607
Journal Journal of Forestry Research
Volume Number 9
Issue Number 1
Page Count 5
Starting Page 8
Ending Page 12

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Source: SpringerLink