Abstract—

In the course of studies in typical forest ecosystems of the northern, middle, and southern taiga of Western Siberia performed at the peak of the growing season, the spatial variation of soil CO₂ emissions and their relationships with the content of extractable and microbial soil carbon and soil hydrothermic parameters were estimated. The studied parameters of the soil carbon cycle are characterized by the high spatial variability in all the studied ecosystems. This fact indicates the need for a detailed investigation of the greenhouse gas soil emission in all ecosystems typical of a given natural zone. There is a statistically significant difference between the soils of the green-moss pine forests and the soils of the lichen pine forest of the northern taiga. In the green-moss pine forest, the carbon content of microbial biomass is 1.5 times higher (195 ± 24 and 127 ± 16 mg C/kg soil, respectively), the content of extractable carbon is 4 times higher (157 ± 25 and 41 ± 5 mg C/kg of soil, respectively), and the CO₂ emission is 1.7 times higher (324 ± 20 and 190 ± 10 mg CO₂/(m² h), respectively) than those in the lichen pine forest. In the northern taiga zone, carbon dioxide emissions from soils in the green-moss pine forests are largely determined by the soil temperature; the role of soil moisture is less significant. In the soils of lichen pine forests, the CO₂ emission is mainly controlled by the content of extractable carbon. Significant factors influencing the soil СО₂ emission in forest ecosystems of the taiga zone are the content of extractable and microbial carbon and hydrothermic parameters of the soils.

中文翻译：

---

西伯利亚北部，中部和南部针叶林森林生态系统土壤碳循环组分的空间分布

摘要—

在西伯利亚北部，中部和南部针叶林的典型森林生态系统的研究过程中，在生长季节的高峰期进行了土壤CO ₂的空间变化估算了排放量及其与可提取的微生物碳含量和土壤水热参数之间的关系。在所有研究的生态系统中，所研究的土壤碳循环参数具有较高的空间变异性。这一事实表明需要对给定自然区典型的所有生态系统中的温室气体土壤排放进行详细调查。北部针叶林的绿苔松林土壤与地衣松林土壤之间在统计学上有显着差异。在绿苔松树林中，微生物生物量的碳含量高1.5倍（分别为195±24和127±16 mg C / kg土壤），可提取碳含量高4倍（157±25和41）分别为±5 mg C / kg土壤）和CO₂排放量是地衣松林的1.7倍（分别为324±20和190±10 mg CO ₂ /（m ² h））。在北部针叶林地区，绿色苔藓松林土壤中的二氧化碳排放量很大程度上取决于土壤温度。土壤水分的作用不太明显。在地衣松树林的土壤中，CO ₂排放主要受可提取碳含量的控制。影响土壤СО显著因子₂在泰加区的森林生态系统发射是可提取的和微生物碳和土壤的水热参数的内容。