DOI: 10.1002/2015GL065934
论文题名: Temperature acclimation of photosynthesis and respiration: A key uncertainty in the carbon cycle-climate feedback
作者: Lombardozzi D.L. ; Bonan G.B. ; Smith N.G. ; Dukes J.S. ; Fisher R.A.
刊名: Geophysical Research Letters
ISSN: 0094-9298
EISSN: 1944-9029
出版年: 2015
卷: 42, 期: 20 起始页码: 8624
结束页码: 8631
语种: 英语
英文关键词: photosynthesis
; respiration
; temperature acclimation
Scopus关键词: Feedback
; Lakes
; Photosynthesis
; Tropics
; Climate feedbacks
; Community land models
; Earth system model
; Experimental evidence
; Extreme temperatures
; Global land surface
; respiration
; Temperature acclimation
; Uncertainty analysis
; acclimation
; Boreal Kingdom
; carbon cycle
; extreme event
; feedback mechanism
; photosynthesis
; respiration
; temperature
; tropical region
; uncertainty analysis
英文摘要: Earth System Models typically use static responses to temperature to calculate photosynthesis and respiration, but experimental evidence suggests that many plants acclimate to prevailing temperatures. We incorporated representations of photosynthetic and leaf respiratory temperature acclimation into the Community Land Model, the terrestrial component of the Community Earth System Model. These processes increased terrestrial carbon pools by 20 Pg C (22%) at the end of the 21st century under a business-as-usual (Representative Concentration Pathway 8.5) climate scenario. Including the less certain estimates of stem and root respiration acclimation increased terrestrial carbon pools by an additional 17 Pg C (~40% overall increase). High latitudes gained the most carbon with acclimation, and tropical carbon pools increased least. However, results from both of these regions remain uncertain; few relevant data exist for tropical and boreal plants or for extreme temperatures. Constraining these uncertainties will produce more realistic estimates of land carbon feedbacks throughout the 21st century. Key Points Most global land surface models do not account for plant temperature acclimation With acclimation, future carbon gain was larger in high latitudes and smaller in the tropics Studies determining acclimation in tropical and boreal plants are needed © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946593156&doi=10.1002%2f2015GL065934&partnerID=40&md5=9d602b6701a1ab07e2f850f710a43b0e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8914
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Lombardozzi D.L.,Bonan G.B.,Smith N.G.,et al. Temperature acclimation of photosynthesis and respiration: A key uncertainty in the carbon cycle-climate feedback[J]. Geophysical Research Letters,2015-01-01,42(20).