Abstract

A comparative assessment of carbon accumulation in the soils of pine forests in western Russia (the Republic of Karelia, the Karelian Isthmus, and Bryansk region) developed on coarse-textured parent materials has been made. The total carbon stock in the litter and upper soil layer (0–50 cm) varied from 47 t/ha in the soils of pine forests of Bryansk region to 116 t/ha in the soils of pine forests of the Karelian Isthmus. It has been shown that the main factors of carbon accumulation in the soils of pine forests in western Russia were the climate, parent materials, vegetation, agricultural activity, and fires. The influence of climatic conditions has been clearly manifested in the levels of carbon accumulation in the litter and in the upper humus-accumulative soil horizons. In the pine litter within the zone of mixed forests (Bryansk region), the level of carbon accumulation was the lowest, whereas the litter layer of pine forests in the northern taiga (Karelia) has the highest stock of carbon. At the same time, the lowest carbon stocks in the upper mineral soil layers has been noted for the soils of northern taiga forests, which had no humus-accumulative mineral horizon. The variability of carbon stocks in the litter layer was largely controlled by the C/N ratio, as well as by the fraction of deciduous undergrowth and grasses producing high-quality litter. The influence of agricultural activity on soil carbon stock in pine forests was especially pronounced on the Karelian Isthmus with the high agricultural activity in the past, as well as in Bryansk region, where pine forests are formed from pine plantations. The effect of fires on soil carbon stock was most pronounced in heather and lingonberry pine forests of the northern taiga of Karelia.

中文翻译：

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俄罗斯西部松树林的沙质土壤中的碳储量

摘要

在俄罗斯西部（卡累利阿共和国，卡累利阿州地峡和布良斯克州）的松树林土壤中，碳积累的比较评估已通过粗纹理母体材料进行了评估。凋落物和上层土壤层（0-50 cm）中的总碳储量从Bryansk地区的松林土壤中的47吨/公顷到卡累利阿地峡的松林土壤中的116吨/公顷。研究表明，俄罗斯西部松林土壤中碳积累的主要因素是气候，母本，植被，农业活动和火灾。气候条件的影响已在垫料和腐殖质累积土壤上层的碳积累水平中得到了明显体现。在混交林区（布良斯克地区）内的松树落叶中，碳积累水平最低，而北部针叶林（卡累利阿）的松树林凋落物层具有最高的碳储量。同时，北部针叶林的土壤中没有上层腐殖质的累积矿物质，因此在上层矿物土壤层中的碳储量最低。凋落物层中碳储量的可变性在很大程度上受C / N比以及落叶灌木丛和产生优质凋落物的草的比例的控制。农业活动对松树林土壤碳储量的影响在过去农业活动活跃的卡累利阿地峡以及布良斯克地区尤为明显。布良斯克地区由松树人工林组成。