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Stand structure in lichen/moss pine forest in Karelia.

机译:在卡累利阿的地衣/苔藓松树林中站立结构。

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摘要

Even-aged trees in lichen/moss pine forests (Pinus sylvestris with Cladonia/Pleurozium schreberi and Dicranum polysetum) were analysed, the crown volume defined on the basis of the crown extension and branch lengths was included as a new character.Unlike traditional cumulative characters such as stem volume or basal of area section, the crown volume is a dynamic character reflecting current conditions of tree growth. In young pine forests, the dependence of total crown volume on tree density is linear, while stands >45 years old, this dependence is approximated with square polynomial. Maximum values of the polynomial correspond to contagious trees possessing wide variability in crown sizes. Based on the altitudinal distribution of the total square of crown sections, spatial crown distribution within the forest was analysed.
机译:分析了地衣/苔藓松树林中的老龄树木(带有Cladonia / Pleurozium schreberi的樟子松和Dicranum polysetum),并根据冠的延伸和枝长定义了树冠体积作为新特征,与传统的累积特征不同例如茎部体积或面积的基础部分,树冠体积是反映树木当前生长状况的动态特征。在年轻的松树林中,总树冠体积对树木密度的依赖性是线性的,而> 45岁的林木,这种依赖性可以用平方多项式近似。多项式的最大值对应于在树冠大小上具有很大变化性的传染树。根据树冠截面总平方的高度分布,分析了森林内树冠的空间分布。

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