Global variation in vegetation carbon use efficiency inferred from eddy covariance observations
文献类型：期刊论文
| 作者 | Luo, Xiangzhong1,2; Zhao, Ruiying1; Chu, Housen3; Collalti, Alessio4,5; Fatichi, Simone6; Keenan, Trevor F.3,7; Lu, Xinchen7; Nguyen, Ngoc7; Prentice, I. Colin8,9; Sun, Wu10 |
| 刊名 | NATURE ECOLOGY & EVOLUTION
 |
| 出版日期 | 2025-06-19 |
| 卷号 | N/A |
| ISSN号 | 2397-334X |
| DOI | 10.1038/s41559-025-02753-0 |
| 产权排序 | 11 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Terrestrial ecosystems have been serving as a strong carbon sink that offsets one-quarter of anthropogenic CO2 emissions. Carbon use efficiency (CUE), the percentage of photosynthesized carbon that is available for biomass production and other secondary carbon products, is one factor determining the carbon sink size. The global variation in CUE remains unclear, however, as recent reports disagree over the responses of CUE to temperature, dryness, forest types and stand age, and there are limited direct observations to constrain the related uncertainty. Here, we propose to infer CUE from spatially distributed observations of land-atmosphere CO2 exchange from global eddy covariance sites based on the degree of ecosystem respiration-photosynthesis coupling. Across 2,737 site-years, CUE derived from eddy covariance observations is 0.43 +/- 0.12, consistent with previous inventory-based estimates (0.47 +/- 0.12, n = 301) but with a better representation of spatial-temporal variation in CUE. We find that CUE consistently decreases with temperature, precipitation, light availability and stand age, with a substantial difference in the baseline CUE among biomes. Importantly, CUE of deciduous forests is typically 15% higher than that of evergreen forests, suggesting that over the long-term deciduous forests are more efficient in using photosynthate. Our study advances the understanding of the global variation in CUE and provides insights to guide best practices of forest conservation, management and restoration for carbon sequestration. |
| URL标识 | 查看原文 |
| WOS关键词 | TERRESTRIAL CARBON ; CONSTANT FRACTION ; NATURAL FORESTS ; RESPIRATION ; CLIMATE ; PHOTOSYNTHESIS ; GROWTH ; PATTERNS ; BIOMASS ; SOIL |
| WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001511739600001 |
| 出版者 | NATURE PORTFOLIO |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214529]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Luo, Xiangzhong |
| 作者单位 | 1.Natl Univ Singapore, Dept Geog, Singapore, Singapore; 2.Natl Univ Singapore, Ctr Nat Based Climate Solut, Singapore, Singapore; 3.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA USA; 4.Natl Res Council Italy, Inst Agr & Forestry Syst Mediterranean, Perugia, Italy; 5.Natl Biodivers Future Ctr NBFC, Palermo, Italy; 6.Natl Univ Singapore, Dept Civil & Environm Engn, Singapore, Singapore; 7.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA USA; 8.Imperial Coll London, Dept Life Sci, Silwood Pk Campus, Ascot, England; 9.Tsinghua Univ, Inst Global Change Studies, Dept Earth Syst Sci, Minist Educ,Key Lab Earth Syst Modeling, Beijing, Peoples R China; 10.Carnegie Inst Sci, Dept Global Ecol, Stanford, CA USA; |
| 推荐引用方式 GB/T 7714 | Luo, Xiangzhong,Zhao, Ruiying,Chu, Housen,et al. Global variation in vegetation carbon use efficiency inferred from eddy covariance observations[J]. NATURE ECOLOGY & EVOLUTION,2025,N/A. |
| APA | Luo, Xiangzhong.,Zhao, Ruiying.,Chu, Housen.,Collalti, Alessio.,Fatichi, Simone.,...&Yu, Liyao.(2025).Global variation in vegetation carbon use efficiency inferred from eddy covariance observations.NATURE ECOLOGY & EVOLUTION,N/A. |
| MLA | Luo, Xiangzhong,et al."Global variation in vegetation carbon use efficiency inferred from eddy covariance observations".NATURE ECOLOGY & EVOLUTION N/A(2025). |
入库方式： OAI收割
来源：地理科学与资源研究所
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