| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1088/1748-9326/11/3/034014 |
| Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment. | |
| Abbott BW; Jones JB; Schuur EAG; Chapin III FS; Bowden WB; Bret-Harte MS; Epstein HE; Flannigan MD | |
| 发表日期 | 2016 |
| 出处 | Environmental Research Letters 11 (3): e034014 |
| 出版年 | 2016 |
| 语种 | 英语 |
| 摘要 | As the permafrost region warms, its large organic carbon pool will be increasingly vulnerable to decomposition, combustion, and hydrologic export. Models predict that some portion of this release will be offset by increased production of Arctic and boreal biomass; however, the lack of robust estimates of net carbon balance increases the risk of further overshooting international emissions targets. Precise empirical or model-based assessments of the critical factors driving carbon balance are unlikely in the near future, so to address this gap, we present estimates from 98 permafrost-region experts of the response of biomass, wildfire, and hydrologic carbon flux to climate change. Results suggest that contrary to model projections, total permafrost-region biomass could decrease due to water stress and disturbance, factors that are not adequately incorporated in current models. Assessments indicate that end-of-the-century organic carbon release from Arctic rivers and collapsing coastlines could increase by 75% while carbon loss via burning could increase four-fold. Experts identified water balance, shifts in vegetation community, and permafrost degradation as the key sources of uncertainty in predicting future system response. In combination with previous findings, results suggest the permafrost region will become a carbon source to the atmosphere by 2100 regardless of warming scenario but that 65%–85% of permafrost carbon release can still be avoided if human emissions are actively reduced. |
| 主题 | Ecosystems Services and Management (ESM) |
| URL | http://pure.iiasa.ac.at/id/eprint/12901/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130505 |
| 推荐引用方式 GB/T 7714 | Abbott BW,Jones JB,Schuur EAG,et al. Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment.. 2016. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Biomass%20offsets%20（1232KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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