DOI: 10.1111/gcb.14437
Scopus记录号: 2-s2.0-85056454041
论文题名: FACE facts hold for multiple generations; Evidence from natural CO 2 springs
作者: Saban J.M. ; Chapman M.A. ; Taylor G.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2019
卷: 25, 期: 1 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: atmospheric CO 2
; climate change
; meta-analysis
; natural CO 2 spring
; plant adaptation
; plant response
; plasticity
Scopus关键词: acclimation
; adaptation
; atmosphere-biosphere interaction
; atmospheric chemistry
; carbon dioxide
; carbon dioxide enrichment
; carbon sink
; climate change
; concentration (composition)
; meta-analysis
; photosynthesis
; plant
; carbon dioxide
; acclimatization
; chemistry
; ecosystem
; environment
; growth, development and aging
; meta analysis
; metabolism
; natural spring
; photosynthesis
; physiology
; plant
; plant leaf
; Acclimatization
; Carbon Dioxide
; Ecosystem
; Environment
; Natural Springs
; Photosynthesis
; Plant Leaves
; Plants
英文摘要: Rising atmospheric CO 2 concentration is a key driver of enhanced global greening, thought to account for up to 70% of increased global vegetation in recent decades. CO 2 fertilization effects have further profound implications for ecosystems, food security and biosphere-atmosphere feedbacks. However, it is also possible that current trends will not continue, due to ecosystem level constraints and as plants acclimate to future CO 2 concentrations. Future predictions of plant response to rising [CO 2 ] are often validated using single-generation short-term FACE (Free Air CO 2 Enrichment) experiments but whether this accurately represents vegetation response over decades is unclear. The role of transgenerational plasticity and adaptation in the multigenerational response has yet to be elucidated. Here, we propose that naturally occurring high CO 2 springs provide a proxy to quantify the multigenerational and long-term impacts of rising [CO 2 ] in herbaceous and woody species respectively, such that plasticity, transgenerational effects and genetic adaptation can be quantified together in these systems. In this first meta-analysis of responses to elevated [CO 2 ] at natural CO 2 springs, we show that the magnitude and direction of change in eight of nine functional plant traits are consistent between spring and FACE experiments. We found increased photosynthesis (49.8% in spring experiments, comparable to 32.1% in FACE experiments) and leaf starch (58.6% spring, 84.3% FACE), decreased stomatal conductance (g s , 27.2% spring, 21.1% FACE), leaf nitrogen content (6.3% spring, 13.3% FACE) and Specific Leaf Area (SLA, 9.7% spring, 6.0% FACE). These findings not only validate the use of these sites for studying multigenerational plant response to elevated [CO 2 ], but additionally suggest that long-term positive photosynthetic response to rising [CO 2 ] are likely to continue as predicted by single-generation exposure FACE experiments. © 2018 The Authors. Global Change Biology Published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117560
Appears in Collections: 气候变化与战略
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Recommended Citation:
Saban J.M.,Chapman M.A.,Taylor G.. FACE facts hold for multiple generations; Evidence from natural CO 2 springs[J]. Global Change Biology,2019-01-01,25(1)