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.
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Changsheng, L., Jianfeng, S., Yongfang, X. et al. Crown morphology of Norway spruce from usual tree measurements. Journal of Forestry Research 9, 8–12 (1998). https://doi.org/10.1007/BF02856445
- Crown morphology
- Crown ratio
- Norway spruce
- Picea abies Karst
- Wood quality