Abstract

Evaluating temporal variability of CO₂ efflux from the tree trunks of Scots pine (Pinus sylvestris L.) are presented. The field measurements were performed by the chamber method in a swampy cotton grassy–sphagnum pine forest in Yaroslavl region and in a highly productive grassy–bilberry pine forest on well drained sandy soils in the Serebryaniy Bor forest service area in Moscow region. Tree trunk respiration was measured during several growing seasons under different weather conditions and groundwater level depths. The results showed that the CO₂ emission of living tree trunks in the southern European taiga forests exhibited clear seasonal and diurnal variation and it was a highly sensitive to changing ambient conditions (air temperature and groundwater level). The differences in the trunk respiration rate of trees of various growth classes for a swampy pine forest were also revealed.

中文翻译：

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不同生长条件下苏格兰松茎表面的CO 2流出

摘要

介绍了评估苏格兰松（Pinus sylvestris L.）的树干中CO ₂外排的时间变化。实地测量是在雅罗斯拉夫尔地区的一片沼泽棉草-球茎松树林中以及莫斯科地区Serebryaniy Bor森林服务区排水良好的沙质土壤上的高产草-越橘松树林中进行的。在不同的天气条件和地下水位深度下的几个生长季节中测量树干的呼吸。结果表明，CO ₂欧洲南部针叶林中活树干的排放显示出明显的季节和昼夜变化，并且对变化的环境条件（气温和地下水位）高度敏感。还揭示了沼泽松树林中不同生长等级的树木树干呼吸速率的差异。