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Evidence for widespread thermal optimality of ecosystem respiration

文献类型：期刊论文

作者Chen, Weinan; Wang, Song; Wang, Jinsong; Xia, Jianyang; Luo, Yiqi; Yu, Guirui; Niu, Shuli
刊名NATURE ECOLOGY & EVOLUTION
出版日期2023-07-24
卷号N/A
ISSN号2397-334X
DOI10.1038/s41559-023-02121-w
产权排序1
文献子类Article ; Early Access
英文摘要Ecosystem respiration (ER) is among the largest carbon fluxes between the biosphere and the atmosphere. Understanding the temperature response of ER is crucial for predicting the climate change-carbon cycle feedback. However, whether there is an apparent optimum temperature of ER (T-opt(ER)) and how it changes with temperature remain poorly understood. Here we analyse the temperature response curves of ER at 212 sites from global FLUXNET. We find that ER at 183 sites shows parabolic temperature response curves and T-opt(ER) at which ER reaches the maximum exists widely across biomes around the globe. Among the 15 biotic and abiotic variables examined, T-opt(ER) is mostly related to the optimum temperature of gross primary production (GPP, T-opt(GPP)) and annual maximum daily temperature (T-max). In addition, T-opt(ER) linearly increases with T-max across sites and over vegetation types, suggesting its thermal adaptation. The adaptation magnitude of T-opt(ER), which is measured by the change in T-opt(ER) per unit change in Tmax, is positively correlated with the adaptation magnitude of T-opt(GPP). This study provides evidence of the widespread existence of T-opt(ER) and its thermal adaptation with Tmax across different biomes around the globe. Our findings suggest that carbon cycle models that consider the existence of T-opt(ER) and its adaptation have the potential to more realistically predict terrestrial carbon sequestration in a world with changing climate.
WOS关键词PLANT RESPIRATION ; TEMPERATURE RESPONSE ; LEAF RESPIRATION ; GROWTH TEMPERATURE ; GLOBAL CONVERGENCE ; CO2 CONCENTRATION ; CARBON-DIOXIDE ; ACCLIMATION ; PHOTOSYNTHESIS ; DEPENDENCE
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
语种英语
WOS记录号WOS:001035725400002
出版者NATURE PORTFOLIO
源URL[http://ir.igsnrr.ac.cn/handle/311030/194545]  
专题生态系统网络观测与模拟院重点实验室_外文论文
作者单位1.East China Normal University
2.University of Chinese Academy of Sciences, CAS
3.Institute of Geographic Sciences & Natural Resources Research, CAS
4.Chinese Academy of Sciences
5.Cornell University
推荐引用方式
GB/T 7714		 Chen, Weinan,Wang, Song,Wang, Jinsong,et al. Evidence for widespread thermal optimality of ecosystem respiration[J]. NATURE ECOLOGY & EVOLUTION,2023,N/A.
APA Chen, Weinan.,Wang, Song.,Wang, Jinsong.,Xia, Jianyang.,Luo, Yiqi.,...&Niu, Shuli.(2023).Evidence for widespread thermal optimality of ecosystem respiration.NATURE ECOLOGY & EVOLUTION,N/A.
MLA Chen, Weinan,et al."Evidence for widespread thermal optimality of ecosystem respiration".NATURE ECOLOGY & EVOLUTION N/A(2023).

入库方式： OAI收割

来源：地理科学与资源研究所

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