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The Optimal Temperature of Ecosystem Respiration Homogenizes Under Global Warming

文献类型：期刊论文

作者Zheng, Qinyu2,3; Wang, Song3; Chen, Weinan3; Li, Tao2,3; Liang, Liyin L.1; Chu, Houkun3; Wang, Yiheng2,3; Niu, Shuli2,3
刊名EARTHS FUTURE
出版日期2025-09-09
卷号13期号:9页码:e2025EF006440
DOI10.1029/2025EF006440
产权排序1
文献子类Article
英文摘要Terrestrial ecosystem respiration (ER) is a key component of the carbon cycle and is highly temperature sensitive. While ER is often modeled as an exponential function of temperature, recent evidence shows that ER exhibits an optimal temperature (T opt). However, the temporal dynamics of T opt under climate warming remain poorly understood. This study analyzed data from 135 long-term FLUXNET sites, each with at least 5 years of observation. Our results show that T opt of ER increased with rising temperatures across years within a site, indicating thermal acclimation, with a global average acclimation magnitude (T opt change per unit change in maximum temperature) of 0.82. More interestingly, this acclimation magnitude showed a negative correlation with the mean annual temperature across sites which was particularly evident in deciduous broadleaf forests and in cold regions. This negative correlation suggests that ecosystems in colder sites exhibit higher acclimation magnitudes compared to warmer sites, potentially reducing the variation in T opt across globe under future warming. These findings indicate a global homogenization of T opt under warming conditions. Future scenario analysis suggested that neglecting thermal acclimation may lead to inaccurate T opt estimates under climate change. This study underscores the importance of considering variable thermal acclimation responses of T opt for accurate prediction of future ER.
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WOS关键词THERMAL-ACCLIMATION ; PLANT RESPIRATION ; SOIL RESPIRATION ; CLIMATE-CHANGE ; PHOTOSYNTHESIS ; SENSITIVITY ; FEEDBACKS
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001566631200001
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.igsnrr.ac.cn/handle/311030/216134]  
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Niu, Shuli
作者单位1.Manaaki Whenua Landcare Res, Palmerston North, New Zealand
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China;
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China;
推荐引用方式
GB/T 7714		 Zheng, Qinyu,Wang, Song,Chen, Weinan,et al. The Optimal Temperature of Ecosystem Respiration Homogenizes Under Global Warming[J]. EARTHS FUTURE,2025,13(9):e2025EF006440.
APA Zheng, Qinyu.,Wang, Song.,Chen, Weinan.,Li, Tao.,Liang, Liyin L..,...&Niu, Shuli.(2025).The Optimal Temperature of Ecosystem Respiration Homogenizes Under Global Warming.EARTHS FUTURE,13(9),e2025EF006440.
MLA Zheng, Qinyu,et al."The Optimal Temperature of Ecosystem Respiration Homogenizes Under Global Warming".EARTHS FUTURE 13.9(2025):e2025EF006440.

入库方式： OAI收割

来源：地理科学与资源研究所

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