Quantifying global soil carbon losses in response to warming
Crowther, TW; Todd-Brown, KEO; Rowe, CW; Wieder, WR; Carey, JC; Machmuller, MB; Snoek, BL; Fang, S; Zhou, G; Allison, SD; Blair, JM; Bridgham, SD; Burton, AJ; Carrillo, Y; Reich, PB; Clark, JS; Classen, AT; Dijkstra, FA; Elberling, B; Emmett, BA; Estiarte, M; Frey, SD; Guo, J; Harte, J; Jiang, L; Johnson, BR; Kroel-Dulay, G; Larsen, KS; Laudon, H; Lavallee, JM; Luo, Y; Lupascu, M; Ma, LN; Marhan, S; Michelsen, A; Mohan, J; Niu, S; Pendall, E; Penuelas, J; Pfeifer-Meister, L; Poll, C; Reinsch, S; Reynolds, LL; Schmidt, IK; Sistla, S; Sokol, NW; Templer, PH; Treseder, KK; Welker, JM; Bradford, MA
2016
发表期刊NATURE
ISSN0028-0836
卷号540期号:7631页码:104-+
摘要The majority of the Earth's terrestrial carbon is stored in the soil. If anthropogenic warming stimulates the loss of this carbon to the atmosphere, it could drive further planetary warming(1-4). Despite evidence that warming enhances carbon fluxes to and from the soil(5,6), the net global balance between these responses remains uncertain. Here we present a comprehensive analysis of warming-induced changes in soil carbon stocks by assembling data from 49 field experiments located across North America, Europe and Asia. We find that the effects of warming are contingent on the size of the initial soil carbon stock, with considerable losses occurring in high-latitude areas. By extrapolating this empirical relationship to the global scale, we provide estimates of soil carbon sensitivity to warming that may help to constrain Earth system model projections. Our empirical relationship suggests that global soil carbon stocks in the upper soil horizons will fall by 30 +/- 30 petagrams of carbon to 203 +/- 161 petagrams of carbon under one degree of warming, depending on the rate at which the effects of warming are realized. Under the conservative assumption that the response of soil carbon to warming occurs within a year, a business-as-usual climate scenario would drive the loss of 55 +/- 50 petagrams of carbon from the upper soil horizons by 2050. This value is around 12-17 per cent of the expected anthropogenic emissions over this period(7,8). Despite the considerable uncertainty in our estimates, the direction of the global soil carbon response is consistent across all scenarios. This provides strong empirical support for the idea that rising temperatures will stimulate the net loss of soil carbon to the atmosphere, driving a positive land carbon-climate feedback that could accelerate climate change.
文章类型Journal
学科领域Science & Technology - Other Topics
研究领域[WOS]Multidisciplinary Sciences
关键词[WOS]EARTH SYSTEM MODELS ; CLIMATE-CHANGE ; TEMPERATURE SENSITIVITY ; ORGANIC-CARBON ; FEEDBACKS ; TUNDRA ; DECOMPOSITION ; UNCERTAINTY ; PROJECTIONS ; ECOSYSTEMS
收录类别SCI
语种英语
WOS记录号WOS:000388916600057
出版者NATURE PUBLISHING GROUP
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文献类型期刊论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/44148
专题生态系统网络观测与模拟院重点实验室_生态网络实验室
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Crowther, TW,Todd-Brown, KEO,Rowe, CW,et al. Quantifying global soil carbon losses in response to warming[J]. NATURE,2016,540(7631):104-+.
APA Crowther, TW.,Todd-Brown, KEO.,Rowe, CW.,Wieder, WR.,Carey, JC.,...&Bradford, MA.(2016).Quantifying global soil carbon losses in response to warming.NATURE,540(7631),104-+.
MLA Crowther, TW,et al."Quantifying global soil carbon losses in response to warming".NATURE 540.7631(2016):104-+.
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