Carbon emission from Western Siberian inland waters.
Carbon emission from Western Siberian inland waters.
复制标题
西西伯利亚内陆沃茨的碳排放。
DOI：
10.1038/s41467-021-21054-1
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发表时间：
2021-02-05
影响因子：
16.6
通讯作者：
Pokrovsky OS
中科院分区：
文献类型：
--
作者：
Karlsson J;Serikova S;Vorobyev SN;Rocher-Ros G;Denfeld B;Pokrovsky OS
高纬度地区在碳(C)循环和气候系统中起着关键作用。一个重要的问题是，随着这些地区气候变暖的放大，部分储存在永冻层中的大量土壤碳储量的动员和大气释放的程度。这些碳的一小部分被出口到内陆水域并排放到大气中，但这些损失受到的限制很少，很少在高纬度碳平衡评估中考虑在内。这与西西伯利亚尤其相关，因为西西伯利亚拥有广泛的泥炭地C种群，可能对正在进行的气候变化非常敏感。在这里，我们量化了内陆水域的碳排放，包括鄂毕河(北极最大的分水岭)，横跨西西伯利亚的所有永久冻土区。结果表明，北冰洋内陆水碳排放量很高(0.08pgCyr−1)，在区域碳循环中具有重要意义，很大程度上超过了向北冰洋输出碳的7-9倍，占该区域陆地碳吸收总量的近一半(35-50%)。内陆水域碳排放的这一重要作用突显了陆地-水耦合研究的必要性，以了解当代碳循环及其对气候变暖的反应。河流和湖泊被认为是锁定在高纬度系统中的大量碳的主要损失渠道，但这种损失没有得到很好的限制。在这里，作者量化了西西伯利亚各地河流和湖泊的碳排放量，发现排放量很高，超过了向北冰洋出口的碳。
High-latitude regions play a key role in the carbon (C) cycle and climate system. An important question is the degree of mobilization and atmospheric release of vast soil C stocks, partly stored in permafrost, with amplified warming of these regions. A fraction of this C is exported to inland waters and emitted to the atmosphere, yet these losses are poorly constrained and seldom accounted for in assessments of high-latitude C balances. This is particularly relevant for Western Siberia, with its extensive peatland C stocks, which can be strongly sensitive to the ongoing changes in climate. Here we quantify C emission from inland waters, including the Ob’ River (Arctic’s largest watershed), across all permafrost zones of Western Siberia. We show that the inland water C emission is high (0.08–0.10 Pg C yr−1) and of major significance in the regional C cycle, largely exceeding (7–9 times) C export to the Arctic Ocean and reaching nearly half (35–50%) of the region’s land C uptake. This important role of C emission from inland waters highlights the need for coupled land–water studies to understand the contemporary C cycle and its response to warming. Rivers and lakes are thought to be a major conduit of loss for the massive amounts of carbon locked away in high-latitude systems, but such losses are poorly constrained. Here the authors quantify carbon emissions from rivers and lakes across Western Siberia, finding that emissions are high and exceed carbon export to the Arctic Ocean.
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影响因子：
16.6
作者：
Allen GH;Pavelsky TM;Barefoot EA;Lamb MP;Butman D;Tashie A;Gleason CJ
通讯作者：
Gleason CJ
影响因子：
5.2
作者：
Campeau, Audrey;Lapierre, Jean-Francois;del Giorgio, Paul A.
通讯作者：
del Giorgio, Paul A.
影响因子：
5.2
作者：
Lundin, Erik J.;Klaminder, Jonatan;Karlsson, Jan
通讯作者：
Karlsson, Jan
影响因子：
5.2
作者：
Lauerwald, Ronny;Laruelle, Goulven G.;Regnier, Pierre A. G.
通讯作者：
Regnier, Pierre A. G.
影响因子：
56.9
作者：
KLING, GW;KIPPHUT, GW;MILLER, MC
通讯作者：
MILLER, MC