Temperature constraints of terrestrial ecosystem respiration in global biomes
文献类型：期刊论文
| 作者 | Liu, Zhenhai1,2,3; Chen, Jiquan3; Chen, Bin1; Wang, Shaoqiang1,2,4,5 |
| 刊名 | FUNCTIONAL ECOLOGY
 |
| 出版日期 | 2025-06-03 |
| 卷号 | N/A |
| 关键词 | ecosystem respiration high-temperature inhibition temperature dependence temperature response function temperature threshold |
| ISSN号 | 0269-8463 |
| DOI | 10.1111/1365-2435.70075 |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Ecosystem respiration (Re) plays a critical role in the global carbon cycle, but is conventionally modelled with temperature response functions that do not adequately account for the limiting effects of high temperature on Re. Using Re data from the FLUXNET2015 network, we compared the conventional exponential temperature response function with a unimodal function that incorporates these effects. We found that the conventional function significantly underestimates the sensitivity of Re to temperature, potentially leading to overestimation of future carbon emissions. The activation energy (Ea$$ {E}_a $$) estimated by the unimodal function averaged 0.97 +/- 0.44 eV, substantially higher than the 0.58 +/- 0.27 eV calculated by the exponential function. The temperature threshold (Tth$$ {T}_{\mathrm{th}} $$) for Re inhibition was identified at an average of 26.58 degrees C across biomes. The largest Re increase occurs under SSP585, reaching 147.85% and 153.81% for the exponential and unimodal functions, respectively, by 2100 relative to Re simulated using the exponential function in 1990. As rising temperatures push ecosystems toward their thermal optimum, greater overestimation beyond the divergence threshold in SSP585 reduces the difference between the two functions compared to SSP245 and SSP370. These findings emphasize an underestimated temperature dependence and inaccurate trends in ecosystem respiration, highlighting the necessity of integrating high-temperature inhibition effects into Re models to improve projections of carbon dynamics.Read the free Plain Language Summary for this article on the Journal blog. |
| URL标识 | 查看原文 |
| WOS关键词 | SOIL RESPIRATION ; CARBON-DIOXIDE ; THERMAL-ACCLIMATION ; BIOPHYSICAL CONTROLS ; ROOT RESPIRATION ; MIXED-CONIFER ; CLIMATE ; EXCHANGE ; MODEL ; PRODUCTIVITY |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001500494000001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214664]  |
| 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 | Chen, Bin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China; 3.Michigan State Univ, Dept Geog Environm & Spatial Sci, E Lansing, MI USA; 4.China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Reg Ecol & Environm Change, Wuhan, Peoples R China; 5.Minist Nat Resources, Technol Innovat Ctr Intelligent Monitoring & Spati, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhenhai,Chen, Jiquan,Chen, Bin,et al. Temperature constraints of terrestrial ecosystem respiration in global biomes[J]. FUNCTIONAL ECOLOGY,2025,N/A. |
| APA | Liu, Zhenhai,Chen, Jiquan,Chen, Bin,&Wang, Shaoqiang.(2025).Temperature constraints of terrestrial ecosystem respiration in global biomes.FUNCTIONAL ECOLOGY,N/A. |
| MLA | Liu, Zhenhai,et al."Temperature constraints of terrestrial ecosystem respiration in global biomes".FUNCTIONAL ECOLOGY 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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