【气候变化正导致青藏高原永冻土上层的碳吸收量增加】Jinzhi DingLeiyi ChenChengjun JiGustaf HugeliusYingnian LiLi LiuShuqi QinBeibei ZhangGuibiao YangFei LiKai FangYongliang ChenYunfeng PengXia ZhaoHonglin HePete SmithJingyun Fang & Yuanhe Yang. Decadal soil carbon accumulation across Tibetan permafrost regions. Nature Geoscience 10 420–424 (2017) doi:10.1038-ngeo2945

研究认为永久冻土上层中的碳封存或有助于抵消目前正在融化的永久冻土深层所释放的碳。(来源：Nature自然科研)

Abstract

Permafrost soils store large amounts of carbon. Warming can result in carbon release from thawing permafrost but it can also lead to enhanced primary production which can increase soil carbon stocks. The balance of these fluxes determines the nature of the permafrost feedback to warming. Here we assessed decadal changes in soil organic carbon stocks in the active layer—the uppermost 30 cm—of permafrost soils across Tibetan alpine regions based on repeated soil carbon measurements in the early 2000s and 2010s at the same sites. We observed an overall accumulation of soil organic carbon irrespective of vegetation type with a mean rate of 28.0