Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14863 |
Increased high-latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition | |
Liu, Zhihua1,2; Kimball, John S.2,3; Parazoo, Nicholas C.4; Ballantyne, Ashley P.3; Wang, Wen J.5; Madani, Nima4; Pan, Caleb G.2; Watts, Jennifer D.6; Reichle, Rolf H.7; Sonnentag, Oliver8,9; Marsh, Philip10; Hurkuck, Miriam8,9; Helbig, Manuel11; Quinton, William L.10; Zona, Donatella12; Ueyama, Masahito13; Kobayashi, Hideki14; Euskirchen, Eugenie S.15 | |
2019-11-06 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Peoples R China; USA; Canada; Japan |
英文摘要 | Arctic and boreal ecosystems play an important role in the global carbon (C) budget, and whether they act as a future net C sink or source depends on climate and environmental change. Here, we used complementary in situ measurements, model simulations, and satellite observations to investigate the net carbon dioxide (CO2) seasonal cycle and its climatic and environmental controls across Alaska and northwestern Canada during the anomalously warm winter to spring conditions of 2015 and 2016 (relative to 2010-2014). In the warm spring, we found that photosynthesis was enhanced more than respiration, leading to greater CO2 uptake. However, photosynthetic enhancement from spring warming was partially offset by greater ecosystem respiration during the preceding anomalously warm winter, resulting in nearly neutral effects on the annual net CO2 balance. Eddy covariance CO2 flux measurements showed that air temperature has a primary influence on net CO2 exchange in winter and spring, while soil moisture has a primary control on net CO2 exchange in the fall. The net CO2 exchange was generally more moisture limited in the boreal region than in the Arctic tundra. Our analysis indicates complex seasonal interactions of underlying C cycle processes in response to changing climate and hydrology that may not manifest in changes in net annual CO2 exchange. Therefore, a better understanding of the seasonal response of C cycle processes may provide important insights for predicting future carbon-climate feedbacks and their consequences on atmospheric CO2 dynamics in the northern high latitudes. |
英文关键词 | ABoVE boreal carbon cycle climate change productivity respiration SMAP L4C soil moisture tundra |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000494557400001 |
WOS关键词 | BLACK SPRUCE FOREST ; NON-FROZEN SEASONS ; ATMOSPHERIC CO2 ; CHLOROPHYLL FLUORESCENCE ; NORTHERN ECOSYSTEMS ; DIOXIDE EXCHANGE ; CLIMATE-CHANGE ; SOIL-MOISTURE ; PERMAFROST ; CYCLE |
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/188264 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110016, Liaoning, Peoples R China; 2.Univ Montana, WA Franke Coll Forestry & Conservat, Numer Terradynam Simulat Grp, Missoula, MT 59812 USA; 3.Univ Montana, WA Franke Coll Forestry & Conservat, Dept Ecosyst & Conservat Sci, Missoula, MT 59812 USA; 4.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA; 5.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Jilin, Peoples R China; 6.Woods Hole Res Ctr, Falmouth, MA USA; 7.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 8.Univ Montreal, Dept Geog, Montreal, PQ, Canada; 9.Univ Montreal, Ctr Etud Nordiques, Montreal, PQ, Canada; 10.Wilfrid Laurier Univ, Cold Reg Res Ctr, Waterloo, ON, Canada; 11.McMaster Univ, Sch Geog & Earth Sci, Hamilton, ON, Canada; 12.San Diego State Univ, Dept Biol, Global Change Res Grp, San Diego, CA 92182 USA; 13.Osaka Prefecture Univ, Grad Sch Life & Environm Sci, Sakai, Osaka, Japan; 14.Japan Agcy Marine Earth Sci & Technol, Inst Arctic Climate & Environm Res, Yokohama, Kanagawa, Japan; 15.Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK USA |
推荐引用方式 GB/T 7714 | Liu, Zhihua,Kimball, John S.,Parazoo, Nicholas C.,et al. Increased high-latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition[J]. GLOBAL CHANGE BIOLOGY,2019. |
APA | Liu, Zhihua.,Kimball, John S..,Parazoo, Nicholas C..,Ballantyne, Ashley P..,Wang, Wen J..,...&Euskirchen, Eugenie S..(2019).Increased high-latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition.GLOBAL CHANGE BIOLOGY. |
MLA | Liu, Zhihua,et al."Increased high-latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition".GLOBAL CHANGE BIOLOGY (2019). |
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