Abstract

The paper analyzes the problems of carbon stocks variation in the pool of cropland mineral soils at the regional scale of the Russian Federation. The carbon stock balance of cropland soils was evaluated by estimating carbon gains and losses, and then the components of the carbon footprint were measured as a ratio of soil organic carbon balance to crop production quantity in terms of grain equivalent (t C/t grain eq.). The estimates for the period 2011–2020 have revealed that there is generally a small net gain of carbon on cropland in Russia, mainly due to the intake of carbon from plant residues. Most of the steppe region of Russia suffers from net losses of carbon at levels from –0.15 t C/t grain eq. up to –0.69 t C/t grain eq. In other regions, such as the Central Chernozem and Black Sea Coast regions, net carbon gain is observed in the range of 0.1–0.3 t C/t grain eq. due to the intake of significant biomass of crop and root residues as a consequence of intensive crop production.

中文翻译：

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评估俄罗斯地区农田碳储量和碳足迹组成的平衡方法

摘要

本文分析了俄罗斯联邦区域尺度农田矿质土壤库碳储量变化问题。通过估算碳增益和损失来评估农田土壤的碳储量平衡，然后将碳足迹的组成部分测量为土壤有机碳平衡与以粮食当量表示的农作物产量的比率（t C/t 粮食当量） .)。对2011-2020年期间的估计显示，俄罗斯农田的碳净增加量总体较小，主要是由于从植物残留物中吸收了碳。俄罗斯大部分草原地区的碳净损失水平为 –0.15 吨 C/t 粮食当量。高达 –0.69 t C/t 谷物当量 在其他地区，例如中部黑钙土和黑海沿岸地区，观察到净碳增量在 0.1-0.3 t C/t 谷物当量范围内。由于集约化作物生产而摄入了大量的作物生物量和根部残留物。