Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14638 |
Changes in timing of seasonal peak photosynthetic activity in northern ecosystems | |
Park, Taejin1; Chen, Chi1; Macias-Fauria, Marc2; Tommervik, Hans3; Choi, Sungho4; Winkler, Alexander5,6; Bhatt, Uma S.7; Walker, Donald A.8; Piao, Shilong9; Brovkin, Victor5; Nemani, Ramakrishna R.10; Myneni, Ranga B.1 | |
2019-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:7页码:2382-2395 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Norway; Germany; Peoples R China |
英文摘要 | Seasonality in photosynthetic activity is a critical component of seasonal carbon, water, and energy cycles in the Earth system. This characteristic is a consequence of plant's adaptive evolutionary processes to a given set of environmental conditions. Changing climate in northern lands (> 30 degrees N) alters the state of climatic constraints on plant growth, and therefore, changes in the seasonality and carbon accumulation are anticipated. However, how photosynthetic seasonality evolved to its current state, and what role climatic constraints and their variability played in this process and ultimately in carbon cycle is still poorly understood due to its complexity. Here, we take the "laws of minimum" as a basis and introduce a new framework where the timing (day of year) of peak photosynthetic activity (DOYPmax) acts as a proxy for plant's adaptive state to climatic constraints on its growth. Our analyses confirm that spatial variations in DOYPmax reflect spatial gradients in climatic constraints as well as seasonal maximum and total productivity. We find a widespread warming-induced advance in DOYPmax (-1.66 +/- 0.30 days/decade, p < 0.001) across northern lands, indicating a spatiotemporal dynamism of climatic constraints to plant growth. We show that the observed changes in DOYPmax are associated with an increase in total gross primary productivity through enhanced carbon assimilation early in the growing season, which leads to an earlier phase shift in land-atmosphere carbon fluxes and an increase in their amplitude. Such changes are expected to continue in the future based on our analysis of earth system model projections. Our study provides a simplified, yet realistic framework based on first principles for the complex mechanisms by which various climatic factors constrain plant growth in northern ecosystems. |
英文关键词 | carbon cycle climate change climate constraint earth system model eddy covariance gross primary productivity law of minimum photosynthetic seasonality remote sensing |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477087100016 |
WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; NET PRIMARY PRODUCTION ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; PLANT PRODUCTIVITY ; TERRESTRIAL GROSS ; ATMOSPHERIC CO2 ; TREE MORTALITY ; PHENOLOGY ; TEMPERATURE |
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/184621 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA; 2.Univ Oxford, Sch Geog & Environm, Oxford, England; 3.Norwegian Inst Nat Res, FRAM High North Res Ctr Climate & Environm, Tromso, Norway; 4.Rhombus Power Inc, NASA Ames Res Pk, Moffett Field, CA USA; 5.Max Planck Inst Meteorol, Hamburg, Germany; 6.Int Max Planck Res Sch Earth Syst Modeling, Hamburg, Germany; 7.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA; 8.Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA; 9.Peking Univ, Coll Urban & Environm Sci, Beijing, Peoples R China; 10.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA |
推荐引用方式 GB/T 7714 | Park, Taejin,Chen, Chi,Macias-Fauria, Marc,et al. Changes in timing of seasonal peak photosynthetic activity in northern ecosystems[J]. GLOBAL CHANGE BIOLOGY,2019,25(7):2382-2395. |
APA | Park, Taejin.,Chen, Chi.,Macias-Fauria, Marc.,Tommervik, Hans.,Choi, Sungho.,...&Myneni, Ranga B..(2019).Changes in timing of seasonal peak photosynthetic activity in northern ecosystems.GLOBAL CHANGE BIOLOGY,25(7),2382-2395. |
MLA | Park, Taejin,et al."Changes in timing of seasonal peak photosynthetic activity in northern ecosystems".GLOBAL CHANGE BIOLOGY 25.7(2019):2382-2395. |
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