Productivity gains fail to offset CUE decline in boreal region: Latent threats to carbon sinks under extreme climate events
文献类型：期刊论文
| 作者 | Li, Jingwen; Dong, Suocheng; Li, Zehong; Li, Yu; Xia, Bing; Wang, Mengyuan |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2026-06-01 |
| 卷号 | 261页码:105400 |
| 关键词 | Carbon Cycle Food Security Urbanisation Terrestrial ecology |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2026.105400 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Boreal forests, crucial global carbon stocks, depend on stable carbon use efficiency (CUE) to sustain vegetation carbon allocation under climate warming. Integrating multi-source remote sensing and model simulations, we revealed a significant CUE decline (-0.009 yr-1) across 71.5% of boreal regions (2001-2022), particularly in Siberia, northern Canada, and the eastern European plain, despite increasing gross/net primary productivity. This was driven by nonlinear threshold responses to temperature and precipitation, with extreme summer high temperatures and droughts causing significant CUE decline, 3.8 times greater than in spring. Impacts varied by vegetation functional type: evergreen needleleaf forests (CUE = 0.65) showed the highest CUE and lowest drought sensitivity, whereas deciduous broadleaf forests (CUE = 0.61) had a 30.7% higher probability of CUE decline under extreme high temperature. Projections indicate a 61.3% expansion of extreme high temperature areas by 2100, increasing risks to biomass carbon accumulation. These findings elucidate threshold-driven vegetation carbon allocation responses and provide insights for resilience-oriented forest management in warming climates. |
| URL标识 | 查看原文 |
| WOS关键词 | USE EFFICIENCY ; PLANT RESPIRATION ; ACCLIMATION ; TEMPERATE ; RESPONSES ; RATIO |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001717198800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221260]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 通讯作者 | Dong, Suocheng; Li, Yu |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jingwen,Dong, Suocheng,Li, Zehong,et al. Productivity gains fail to offset CUE decline in boreal region: Latent threats to carbon sinks under extreme climate events[J]. GLOBAL AND PLANETARY CHANGE,2026,261:105400. |
| APA | Li, Jingwen,Dong, Suocheng,Li, Zehong,Li, Yu,Xia, Bing,&Wang, Mengyuan.(2026).Productivity gains fail to offset CUE decline in boreal region: Latent threats to carbon sinks under extreme climate events.GLOBAL AND PLANETARY CHANGE,261,105400. |
| MLA | Li, Jingwen,et al."Productivity gains fail to offset CUE decline in boreal region: Latent threats to carbon sinks under extreme climate events".GLOBAL AND PLANETARY CHANGE 261(2026):105400. |
入库方式： OAI收割
来源：地理科学与资源研究所
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