Abstract

The vitality structure of forest stands and the annual radial increment of Scots pine trees of different vital state categories growing in the northern taiga middle-aged lichen pine forests and woodlands of the Kola Peninsula have been studied. This study has shown a prevalence (60–75%) of weakened and strongly weakened trees in the Scots pine forests and woodlands; the fraction of healthy trees does not exceed 15–20% (30% in terms of the stand volume). In the age range of 30–85 years, the radial growth of Scots pine trees in the communities studied decreases 1.5- to 3.5-fold, and the annual basal area increases 1.5- to 5-fold. Differentiation of trees of differing vitality in relation to the radial increment is clearly manifested starting from 50 years after the fire. The ratio between the annual basal areas of healthy, weakened, strongly weakened, and dying trees in pine forests and woodlands is 8 : 5 : 2.5 : 1 and 11 : 5.5 : 3.5 : 1, respectively. The difference between the resource potentials of pine woodlands and forests is 1 : 1.6 and is manifested at the level of communities, but not at the level of individuals.

中文翻译：

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北针叶林地衣松林和林地中的樟子松（樟子松）的径向生长

摘要

研究了北部针叶林中年地衣松林和科拉半岛林地中不同生命状态类别的苏格兰松树的生命力结构和年径增长。这项研究表明，在苏格兰松树林和林地中，普遍存在着被削弱和被强烈削弱的树木（占60-75％）。健康树木的比例不超过15–20％（按林分量计为30％）。在30-85岁的年龄范围内，所研究社区的苏格兰松树放射状生长减少1.5-3.5倍，而每年的基础面积增加1.5--5倍。从火灾发生后的50年开始，就清楚地显示出与径向增量有关的具有不同生命力的树木的分化。健康，弱化，在松树林和林地中，强烈减弱和垂死的树木分别为8：5：2.5：1和11：5.5：3.5：1。松树林和森林的资源潜力之间的差异为1：1：1.6，这体现在社区层面，而不体现在个人层面。