Crown architecture of Larix laricina saplings: quantitative analysis and modelling of (nonsylleptic) order 1 branching in relation to development of the main stem
Crown architecture of Larix laricina saplings: quantitative analysis and modelling of (nonsylleptic) order 1 branching in relation to development of the main stem
复制标题
落叶松树苗的树冠结构：与主干发育相关的（非单节）1 阶分枝的定量分析和建模
作者：
W. Remphrey;G. R. Powell
对落叶松（Larix laricina（Du Roi）K.）来自北卡罗来纳州弗雷德里克顿自然种群的科赫（塔马拉克）树苗，该地区提供的数据，以模拟建筑关系，描述模式（非sylleptic）1阶分支的发展有关的主茎。该模型是基于分支长度与树高生长的关系，以及一级分枝的数量和位置。还纳入了组成分支的嫩枝的仰角，以及1阶长嫩枝向1阶短嫩枝的转化。主序1级枝的当年生枝条的长度随树冠深度的增加而减少。同一树高生长量内，所有现存分支延伸长度的变化趋势相似，但随着分支年龄的增加，长度的减少规律性减弱。由于关系是复杂的，替代方法建模拍摄长度，以提高理解的模式…
The upper 5 years of crown growth in samples of Larix laricina (Du Roi) K. Koch (tamarack) saplings from natural populations in the Fredericton, N.B., area provided data to model architectural relationships describing patterns of (nonsylleptic) order 1 branching in relation to development of the main stem. The model was based on relationships between branch extension and height growth, and numbers and positions of order 1 branches. Elevation angles of shoots making up the branches, and conversion of order 1 long shoots to order 1 short shoots were also incorporated. Lengths of current shoots of major order 1 branches tended to decrease with increasing depth in the crown. Similar tendencies occurred among lengths of all current branch extensions within single height-growth increments, but the decreases in length became less regular with increasing age of branch. Because the relationships were complex, alternative approaches to modelling shoot lengths were adopted to enhance understanding of the patterns in...