Thermal acclimation of plant photosynthesis and autotrophic respiration in a northern peatland
文献类型：期刊论文
| 作者 | Ma,Shuang12,13; Jiang,Lifen11; Wilson,Rachel M1; Chanton,Jeff1; Niu,Shuli10; Iversen,Colleen M9; Malhotra,Avni8,9; Jiang,Jiang7; Huang,Yuanyuan6; Lu,Xingjie5 |
| 刊名 | Environmental Research: Climate
 |
| 出版日期 | 2023-04-21 |
| 卷号 | 2期号:2 |
| 关键词 | autotrophic respiration data-model fusion peatland photosynthesis thermal acclimation warming |
| DOI | 10.1088/2752-5295/acc67e |
| 通讯作者 | Ma,Shuang() ; Jiang,Lifen() ; Luo,Yiqi() |
| 英文摘要 | Abstract Peatlands contain one-third of global soil carbon (C), but the responses of peatland ecosystems to long-term warming are not well understood. Here, we pursue an emergent understanding of warming effects on ecosystem C fluxes at peatlands by constraining a process-oriented model, the terrestrial ECOsystem model, with observational data from a long-term warming experiment at the Spruce and Peatland Responses Under Changing Environments site. Model-based assessments show that ecosystem-level photosynthesis and autotrophic respiration exhibited significant thermal acclimation, with temperature sensitivities being linearly decreased with warming. Using the thermal-acclimated parameter values, simulated gross primary production, net primary production, and plant autotrophic respiration (R a), were all lower than those simulated with non-thermal acclimated parameter values. In contrast, ecosystem respiration simulated with thermal acclimated parameter values was higher than that simulated with non-thermal acclimated parameter values. Net ecosystem CO2 exchange was much higher after constraining model parameters with observational data from the warming treatments, releasing C at a rate of 28.3 g C m?2 yr?1 °C?1. Our data-model integration study suggests that peatlands are likely to release more C than previously estimated. Earth system models may overestimate C uptake by peatlands under warming if physiological thermal acclimation of plants is not incorporated. Thus, it is critical to consider the long-term physiological thermal acclimation of plants in the models to better predict global C dynamics under future climate and their feedback to climate change. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:ERCL_2_2_025003 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193092]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Ma,Shuang; Jiang,Lifen; Luo,Yiqi |
| 作者单位 | 1.Earth, Ocean and Atmospheric Sciences, Florida State University, Tallahassee, FL, United States of America 2.Department of Grassland Resource and Ecology, China Agricultural University, Beijing, People’s Republic of China 3.Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, People’s Republic of China 4.Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States of America 5.School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People’s Republic of China 6.CSIRO Oceans and Atmosphere, Aspendale, Victoria, Australia 7.Department of Soil and Water Conservation, Nanjing Forestry University, Nanjing, Jiangsu, People’s Republic of China 8.Department of Geography, University of Zurich, Zurich, Switzerland 9.Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, United States of America 10.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Ma,Shuang,Jiang,Lifen,Wilson,Rachel M,et al. Thermal acclimation of plant photosynthesis and autotrophic respiration in a northern peatland[J]. Environmental Research: Climate,2023,2(2). |
| APA | Ma,Shuang.,Jiang,Lifen.,Wilson,Rachel M.,Chanton,Jeff.,Niu,Shuli.,...&Luo,Yiqi.(2023).Thermal acclimation of plant photosynthesis and autotrophic respiration in a northern peatland.Environmental Research: Climate,2(2). |
| MLA | Ma,Shuang,et al."Thermal acclimation of plant photosynthesis and autotrophic respiration in a northern peatland".Environmental Research: Climate 2.2(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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