Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41558-020-0747-7 |
Diminishing CO2-driven gains in water-use efficiency of global forests | |
Adams, Mark A.1,2; Buckley, Thomas N.3; Turnbull, Tarryn L.1,2 | |
2020-04-27 | |
发表期刊 | NATURE CLIMATE CHANGE |
ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2020 |
卷号 | 10期号:5页码:466-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; USA |
英文摘要 | There is broad consensus that, via changes in stomatal conductance, plants moderate the exchanges of water and carbon between the biosphere and atmosphere, playing a major role in global hydroclimate. Tree rings record atmospheric CO2 concentration (c(a)) and its isotopic composition (C-13/C-12)-mediated by stomatal and photosynthetic influences-that can be expressed in terms of intrinsic water-use efficiency (W). Here, we compile a global W dataset based on 422 tree-ring isotope series and report that W increased with c(a) over the twentieth century, but the rates of increase (dW/dc(a)) declined by half. Angiosperms contributed more than gymnosperms to the slowdown, and in recent decades, dW/dc(a) for angiosperms was close to zero. dW/dc(a) varies widely across climatic regions and reflects pauses in emissions during the Great Depression and after World War II. There is strong spatial variability in climate forcing via an increasing W, which is weakening globally with time. Under rising CO2, most plants constrict their stomata, lose less water via transpiration and photosynthesize more efficiently. A global dataset of tree-ring isotope measurements reveals a slowdown in water-use efficiency gains over the twentieth century, with marked spatiotemporal variability. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000528994000004 |
WOS关键词 | STABLE CARBON ISOTOPES ; CO2 ENRICHMENT FACE ; PHOTOSYNTHESIS ; RESPONSES ; INCREASE ; LEAF ; TRANSPIRATION ; ASSIMILATION ; CONDUCTANCE ; LEAVES |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249334 |
专题 | 资源环境科学 |
作者单位 | 1.Swinburne Univ Technol, Dept Chem & Biotechnol, Fac Sci Engn & Technol, Melbourne, Vic, Australia; 2.Univ Sydney, Sch Life & Environm Sci, Camperdown, NSW, Australia; 3.Univ Calif Davis, Dept Plant Sci, Coll Agr & Environm Sci, Davis, CA USA |
推荐引用方式 GB/T 7714 | Adams, Mark A.,Buckley, Thomas N.,Turnbull, Tarryn L.. Diminishing CO2-driven gains in water-use efficiency of global forests[J]. NATURE CLIMATE CHANGE,2020,10(5):466-+. |
APA | Adams, Mark A.,Buckley, Thomas N.,&Turnbull, Tarryn L..(2020).Diminishing CO2-driven gains in water-use efficiency of global forests.NATURE CLIMATE CHANGE,10(5),466-+. |
MLA | Adams, Mark A.,et al."Diminishing CO2-driven gains in water-use efficiency of global forests".NATURE CLIMATE CHANGE 10.5(2020):466-+. |
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