1、40 5 200 4 M90.6)(see Fig.1B).The crown profile models, including branch diameter, branch length, angle of origin, and branch chord length,were developed and evaluated at the tree level.These attributes of primary branches for aspecified treeweremainly relat-ed to DINC.DBH and HT were adequate varia
2、blesof tree forsummarizing the effectsof external conditions on the crownprofile.The recommend models appear to perform well and consistently reflect the observed patterns of crown profile ofprimary branches for different tree size.All crown shapes are parabolic in theupperand middle part of crown,
3、and followapproximately cylinder at lowerpart of crown.Relative to small tree, largetrees are more round crown shape.The crown23 5 : = 3 Eshapes of different tree size almost havesame pattern in the uppercrown that DINC ranged from0 to3m, becauseof freefrom inter_trees competition.Therefore, the cro
4、wn forms of the exposed portion invariant among tree sizes in L.olgensisplantations.The general development of crown fora given standwas illustrated in this study.In futurework, as more trees willbe sampled across awider variety of stand conditions, opportunities will arise for introducing more stan
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