Abstract

The accumulation of carbon of organic matter by forest phytocenoses during photosynthesis is their most important function, mitigating climate change on the Earth. The literature provides data that the territory of the Russian Federation is a large sink of atmospheric carbon. However, the estimates of the sink, as well as the values ​​of the net primary production (NPP) of forest ecosystems, vary widely. This paper presents materials describing the net carbon production of phytomass in pine forests of different types of growing conditions in the northern and middle taiga of the Komi Republic. Premature, mature, and old-growth pine forests of green moss, lichen, and sphagnum types have been studied at forest stations. The carbon sequestration by the forest stand is assessed by biological productivity using sample trees. The regression equations for the dependence of the increments of individual organs of a sample tree on the stem diameter at a height of 1.3 m are composed. A statistically significant relationship is found between these parameters, characterized by high trend approximation values ​​varying from 0.44 to 0.99 (at 95% significance level). It is calculated that, under the conditions of the European Russian northeast, the NPP of carbon in pine phytocenoses varies within the range of 1.9–4.5 t C ha^–1 year^–1. It is established that the tree stand accounts for 32–73% of the total NPP. With increasing soil moisture and moving northward, the participation of plants in the ground vegetation increases in the total NPP. It is noted that a significant part of the NPP of carbon of the tree layer of pine forests is formed by the photosynthetic apparatus and the stem wood. Based on these data, the conversion relations between NPP and wood volume/carbon stock in the stand for pine forests of the northern and middle taiga are derived.

中文翻译：

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欧洲俄罗斯东北部（科米共和国）松林中碳的净初级生产力

摘要

森林植物碳素在光合作用过程中积累的有机物质碳是其最重要的功能，可减轻地球上的气候变化。文献提供的数据表明，俄罗斯联邦的领土是大气碳的一大汇。但是，森林生态系统的汇的估算以及净初级生产（NPP）的值差异很大。本文介绍了描述科米共和国北部和中部针叶林不同生长条件的松树林中植物气藻净碳生产的资料。在森林站已经研究了绿色，青苔和泥炭藓类型的早熟，成熟和老龄的松树林。林场的固碳量通过使用样品树的生物生产力来评估。组成了样本树的各个器官的增量对高度为1.3 m的茎直径的依赖关系的回归方程。在这些参数之间发现统计上显着的关系，其特征是高趋势近似值从0.44到0.99（在95％显着性水平）变化。据计算，在欧洲俄罗斯东北部的条件下，松树植物碳素中碳的NPP在1.9–4.5 t C ha范围内变化。^–1年– ^1年。可以确定的是，林分占总NPP的32–73％。随着土壤湿度的增加和向北移动，植物在地面植被中的参与增加了总NPP。值得注意的是，松林树层的碳NPP的很大一部分是由光合作用设备和茎木形成的。基于这些数据，得出了北部和中部针叶林的松树林林分中NPP和木材量/碳储量之间的转换关系。