干旱区生态环境知识资源中心(Arid): Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation

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DOI	10.1029/2019JG005252
	Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation
	Pan, Shufen; Yang, Jia; Tian, Hanqin; Shi, Hao; Chang, Jinfeng; Ciais, Philippe; Francois, Louis; Frieler, Katja; Fu, Bojie; Hickler, Thomas; Ito, Akihiko; Nishina, Kazuya; Ostberg, Sebastian; Reyer, Christopher P. O.; Schaphoff, Sibyll; Steinkamp, Joerg; Zhao, Fang
通讯作者	Tian, HQ
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
EISSN	2169-8961
出版年	2020
卷号	125 期号:4
英文摘要	Carbon fluxes at the land-atmosphere interface are strongly influenced by weather and climate conditions. Yet what is usually known as climate extremes does not always translate into very high or low carbon fluxes or so-called carbon extremes. To reveal the patterns of how climate extremes influence terrestrial carbon fluxes, we analyzed the interannual variations in ecosystem carbon fluxes simulated by the Terrestrial Biosphere Models (TBMs) in the Inter-Sectoral Impact Model Intercomparison Project. At the global level, TBMs simulated reduced ecosystem net primary productivity (NPP; 18.5 +/- 9.3 g C m(-2) yr(-1)), but enhanced heterotrophic respiration (Rh; 7 +/- 4.6 g C m(-2) yr(-1)) during extremely hot events. TBMs also simulated reduced NPP (60.9 +/- 24.4 g C m(-2) yr(-1)) and reduced Rh (16.5 +/- 11.4 g C m(-2) yr(-1)) during extreme dry events. Influences of precipitation extremes on terrestrial carbon uptake were larger in the arid/semiarid zones than other regions. During hot extremes, ecosystems in the low latitudes experienced a larger reduction in carbon uptake. However, a large fraction of carbon extremes did not occur in concert with either temperature or precipitation extremes. Rather these carbon extremes are likely to be caused by the interactive effects of the concurrent temperature and precipitation anomalies. The interactive effects showed considerable spatial variations with the largest effects on NPP in South America and Africa. Additionally, TBMs simulated a stronger sensitivity of ecosystem productivity to precipitation than satellite estimates. This study provides new insights into the complex ecosystem responses to climate extremes, especially the emergent properties of carbon dynamics resulting from compound climate extremes. Plain Language Summary Terrestrial ecosystems sequestrate a large amount of carbon dioxide from the atmosphere, which helps to mitigate climate warming. Climate extremes, such as droughts and heatwaves, play a significant role in determining the capacity of land ecosystems in carbon uptake. In the past decades, terrestrial biosphere models have been widely used to investigate the magnitude and variations of carbon fluxes between land and the atmosphere. In this study, we attempted to understand how model-simulated carbon fluxes respond to climate anomalies and extremes at the global level and across regions. Analysis of model simulations showed significant spatial variations in the sensitivity of carbon fluxes to climate variations. Interestingly, concurrences of abnormal temperature and precipitation could have stronger impacts on carbon fluxes than individual temperature or precipitation extreme event. This study is important for better understanding climate extreme impacts on ecosystem dynamics and the global carbon cycle.
类型	Article
语种	英语
开放获取类型	Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000535659000005
WOS关键词	NET PRIMARY PRODUCTION ; GLOBAL CARBON ; INTERANNUAL VARIABILITY ; PRIMARY PRODUCTIVITY ; SEMIARID ECOSYSTEMS ; WATER DYNAMICS ; DROUGHT ; CO2 ; VEGETATION ; MODELS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324539
作者单位	[Pan, Shufen; Yang, Jia; Tian, Hanqin; Shi, Hao] Auburn Univ, Int Ctr Climate & Global Change Res, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA; [Yang, Jia] Mississippi State Univ, Dept Forestry, Mississippi State, MS 39762 USA; [Shi, Hao; Fu, Bojie] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China; [Chang, Jinfeng; Ciais, Philippe] Lab Sci Climat & Environm, Gif Sur Yvette, France; [Francois, Louis] Univ Liege, UR SPHERES, Liege, Belgium; [Frieler, Katja; Ostberg, Sebastian; Reyer, Christopher P. O.; Schaphoff, Sibyll; Zhao, Fang] Leibniz Assoc, Potsdam Inst Climate Impact Res, Potsdam, Germany; [Hickler, Thomas; Steinkamp, Joerg] Senckenberg Biodivers & Climate Res Ctr, Frankfurt, Germany; [Hickler, Thomas] Goethe Univ, Dept Phys Geog, Frankfurt, Germany; [Ito, Akihiko; Nishina, Kazuya] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan; [Steinkamp, Joerg] Johannes Gutenberg Univ Mainz, Mainz, Germany
推荐引用方式 GB/T 7714	Pan, Shufen,Yang, Jia,Tian, Hanqin,et al. Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation[J],2020,125(4).
APA	Pan, Shufen.,Yang, Jia.,Tian, Hanqin.,Shi, Hao.,Chang, Jinfeng.,...&Zhao, Fang.(2020).Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(4).
MLA	Pan, Shufen,et al."Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.4(2020).