Europe's terrestrial biosphere absorbs 7 to 12% of European anthropogenic CO2 emissions
Europe's terrestrial biosphere absorbs 7 to 12% of European anthropogenic CO2 emissions
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DOI：
10.1126/science.1083592
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发表时间：
2003-06-06
期刊：
影响因子：
56.9
通讯作者：
Dolman, AJ
中科院分区：
文献类型：
--
作者：
Janssens, IA;Freibauer, A;Dolman, AJ
大多数逆大气模型报告了欧洲陆地生物圈对二氧化碳的大量吸收。相比之下，陆地生态系统的碳储量增长速度要小得多，森林和草地土壤的碳增量几乎被农田和泥炭土壤的碳损失所抵消。考虑到大气模型未检测到的非二氧化碳碳转移和绕过生态系统碳储存的二氧化碳通量，大大缩小了小的碳储存变化与大气模型估计的较大的二氧化碳吸收量之间的差距。剩下的差异可能是因为存量变化方法中缺少组成部分，以及两种方法都存在很大的不确定性。使用校正的大气和陆地为基础的估计作为双重约束，我们估计在欧洲的陆地生物圈每年135和205太克之间的净碳汇，相当于1995年人为碳排放量的7%至12%。
Most inverse atmospheric models report considerable uptake of carbon dioxide in Europe's terrestrial biosphere. In contrast, carbon stocks in terrestrial ecosystems increase at a much smaller rate, with carbon gains in forests and grassland soils almost being offset by carbon losses from cropland and peat soils. Accounting for non-carbon dioxide carbon transfers that are not detected by the atmospheric models and for carbon dioxide fluxes bypassing the ecosystem carbon stocks considerably reduces the gap between the small carbon-stock changes and the larger carbon dioxide uptake estimated by atmospheric models. The remaining difference could be because of missing components in the stock-change approach, as well as the large uncertainty in both methods. With the use of the corrected atmosphere- and land-based estimates as a dual constraint, we estimate a net carbon sink between 135 and 205 teragrams per year in Europe's terrestrial biosphere, the equivalent of 7 to 12% of the 1995 anthropogenic carbon emissions.