Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13451 |
Informing climate models with rapid chamber measurements of forest carbon uptake | |
Metcalfe, Daniel B.1; Ricciuto, Daniel2; Palmroth, Sari3; Campbell, Catherine4; Hurry, Vaughan4; Mao, Jiafu2; Keel, Sonja G.5; Linder, Sune6; Shi, Xiaoying2; Nsholm, Torgny4,7; Ohlsson, Klas E. A.7; Blackburn, M.7; Thornton, Peter E.2; Oren, Ram3 | |
2017-05-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; USA; Switzerland |
英文摘要 | Models predicting ecosystem carbon dioxide (CO2) exchange under future climate change rely on relatively few realworld tests of their assumptions and outputs. Here, we demonstrate a rapid and cost-effective method to estimate CO2 exchange from intact vegetation patches under varying atmospheric CO2 concentrations. We find that net ecosystem CO2 uptake (NEE) in a boreal forest rose linearly by 4.7 +/- 0.2% of the current ambient rate for every 10 ppm CO2 increase, with no detectable influence of foliar biomass, season, or nitrogen (N) fertilization. The lack of any clear short-term NEE response to fertilization in such an N-limited system is inconsistent with the instantaneous downregulation of photosynthesis formalized in many global models. Incorporating an alternative mechanism with considerable empirical support -diversion of excess carbon to storage compounds -into an existing earth system model brings the model output into closer agreement with our field measurements. A global simulation incorporating this modified model reduces a long-standing mismatch between the modeled and observed seasonal amplitude of atmospheric CO2. Wider application of this chamber approach would provide critical data needed to further improve modeled projections of biosphere-atmosphere CO2 exchange in a changing climate. |
英文关键词 | boreal forest earth system model model-data integration nutrient limitation photosynthetic downregulation Pinus sylvestris |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397800600030 |
WOS关键词 | CO2 ENRICHMENT FACE ; ATMOSPHERIC CO2 ; ECOSYSTEM RESPONSES ; NET PRIMARY ; BOREAL ; QUANTIFICATION ; PHOTOSYNTHESIS ; ACCLIMATION ; CONDUCTANCE ; DYNAMICS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/16664 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Lund Univ, Dept Phys Geog & Ecosyst Sci, SE-22362 Lund, Sweden; 2.Oak Ridge Natl Lab, Climate Change Sci Inst, Div Environm Sci, Oak Ridge, TN 37831 USA; 3.Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA; 4.Swedish Univ Agr Sci, Umea Plant Sci Ctr, Dept Forest Genet & Plant Physiol, SE-90183 Umea, Sweden; 5.Agroscope, Inst Sustainabil Sci, CH-8046 Zurich, Switzerland; 6.Swedish Univ Agr Sci, Southern Swedish Forest Res Ctr, SE-23053 Alnarp, Sweden; 7.Swedish Univ Agr Sci, Dept Forest Ecol & Management, SE-90183 Umea, Sweden |
推荐引用方式 GB/T 7714 | Metcalfe, Daniel B.,Ricciuto, Daniel,Palmroth, Sari,et al. Informing climate models with rapid chamber measurements of forest carbon uptake[J]. GLOBAL CHANGE BIOLOGY,2017,23(5). |
APA | Metcalfe, Daniel B..,Ricciuto, Daniel.,Palmroth, Sari.,Campbell, Catherine.,Hurry, Vaughan.,...&Oren, Ram.(2017).Informing climate models with rapid chamber measurements of forest carbon uptake.GLOBAL CHANGE BIOLOGY,23(5). |
MLA | Metcalfe, Daniel B.,et al."Informing climate models with rapid chamber measurements of forest carbon uptake".GLOBAL CHANGE BIOLOGY 23.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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