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DOI | 10.1002/2015JG003124 |
Changes in interannual climate sensitivities of terrestrial carbon fluxes during the 21st century predicted by CMIP5 Earth System Models | |
Liu, Yongwen; Wang, Tao; Huang, Mengtian; Yao, Yitong; Ciais, Philippe; Piao, Shilong | |
通讯作者 | Piao, SL (通讯作者) |
发表日期 | 2016 |
ISSN | 2169-8953 |
EISSN | 2169-8961 |
起始页码 | 903 |
结束页码 | 918 |
卷号 | 121期号:3 |
英文摘要 | Terrestrial carbon fluxes are sensitive to climate change, but the interannual climate sensitivity of the land carbon cycle can also change with time. We analyzed the changes in responses of net biome production (NBP), net primary production (NPP), and heterotrophic respiration (Rh) to interannual climate variations over the 21st century in the Earth System Models (ESMs) from the Coupled Model Intercomparison Project 5. Under Representative Concentration Pathway (RCP) 4.5, interannual temperature sensitivities of NBP ((Temp)(NBP)), NPP ((Temp)(NPP)), and Rh ((Temp)(Rh)) remain relatively stable at global scale, yet with large differences among ESMs and spatial heterogeneity. Modeled (Temp)(NPP) and (Temp)(Rh) appear to increase in parallel in boreal regions, resulting in unchanged (Temp)(NBP). Tropical (Temp)(NBP) decreases in most models, due to decreasing (Temp)(NPP) and relatively stable (Temp)(Rh). Across models, the changes in (Temp)(NBP) can be mainly explained by changes in (Temp)(NPP) rather than changes in (Temp)(Rh), at both global and regional scales. Interannual precipitation sensitivities of global NBP ((Prec)(NBP)), NPP ((Prec)(NPP)), and Rh ((Prec)(Rh)) are predicted not to change significantly, with large differences among ESMs. Across models, the changes in (Prec)(NBP) can be mainly explained by changes in (Prec)(NPP) rather than changes in (Prec)(Rh) in temperate regions, but not in other regions. Changes in the interannual climate sensitivities of carbon fluxes are consistent across RCPs 4.5, 6.0, and 8.5 but larger in more intensive scenarios. More effort should be considered to improve terrestrial carbon flux responses to interannual climate variability, e.g., incorporating biogeochemical processes of nutrient limitation, permafrost dynamics, and microbial decomposition. |
关键词 | PERMAFROST CARBONTEMPERATURE SENSITIVITYSEMIARID ECOSYSTEMSFOREST DIEBACKCYCLERESPIRATIONDROUGHTCO2VARIABILITYPHOTOSYNTHESIS |
英文关键词 | net biome production; net primary production; heterotrophic respiration; Representative Concentration Pathway; climate change; terrestrial carbon cycle |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000374345000020 |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258834 |
推荐引用方式 GB/T 7714 | Liu, Yongwen,Wang, Tao,Huang, Mengtian,et al. Changes in interannual climate sensitivities of terrestrial carbon fluxes during the 21st century predicted by CMIP5 Earth System Models[J]. 中国科学院青藏高原研究所,2016,121(3). |
APA | Liu, Yongwen,Wang, Tao,Huang, Mengtian,Yao, Yitong,Ciais, Philippe,&Piao, Shilong.(2016).Changes in interannual climate sensitivities of terrestrial carbon fluxes during the 21st century predicted by CMIP5 Earth System Models.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,121(3). |
MLA | Liu, Yongwen,et al."Changes in interannual climate sensitivities of terrestrial carbon fluxes during the 21st century predicted by CMIP5 Earth System Models".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 121.3(2016). |
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