Abstract—

Winter CO₂ fluxes in Central Siberian ecosystems have been measured using different methodological approaches: dynamic chamber measurements at the soil surface under snowpack (F_soil) and at the upper snowpack surface (F_snow), static estimates based on measured CO₂ concentrations and conductance properties of the snowpack (F_diff), and calculations of CO₂ efflux rates based on the eddy covariance technique (F_ec). The results of measurements are analyzed and discussed with respect to the significance of differences between them and the applicability and limitations of the corresponding methods. The data are presented on winter CO₂ efflux rates in five major ecosystem types of Central Siberia: lichen pine forest, lichen–moss pine forest, mixed forest, dark conifer forest, and raised pine bog.

中文翻译：

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西伯利亚中部生态系统的冬季CO 2通量：使用三种不同方法的比较估计

摘要-

西伯利亚中部生态系统的冬季CO ₂通量已使用不同的方法进行了测量：在积雪下的土壤表面（F_土壤）和积雪上表面（F _snow）进行动态室测量，基于测得的CO ₂浓度和电导率进行静态估算积雪的性质（F _diff），以及基于涡度协方差技术（F _ec的CO ₂外排率的计算）。针对测量结果之间的差异的重要性以及相应方法的适用性和局限性，对测量结果进行了分析和讨论。数据显示了西伯利亚中部五种主要生态系统的冬季CO ₂外流速率：地衣松林，地衣-苔藓松林，混交林，深色针叶林和松树沼泽。