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DOI | 10.1073/pnas.1707889114 |
Early snowmelt significantly enhances boreal springtime carbon uptake | |
Pulliainen, Jouni1; Aurela, Mika1; Laurila, Tuomas1; Aalto, Tuula1; Takala, Matias1; Salminen, Miia1; Kulmala, Markku2; Barr, Alan3,4; Heimann, Martin2,5; Lindroth, Anders6; Laaksonen, Ari1; Derksen, Chris3; Makela, Annikki7; Markkanen, Tiina1; Lemmetyinen, Juha1; Susiluoto, Jouni1; Dengel, Sigrid8; Mammarella, Ivan9; Tuovinen, Juha-Pekka1; Vesala, Timo2,7,9 | |
2017-10-17 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:42页码:11081-11086 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland; Canada; Germany; Sweden; USA |
英文摘要 | We determine the annual timing of spring recovery from space-borne microwave radiometer observations across northern hemisphere boreal evergreen forests for 1979-2014. We find a trend of advanced spring recovery of carbon uptake for this period, with a total average shift of 8.1 d (2.3 d/decade). We use this trend to estimate the corresponding changes in gross primary production (GPP) by applying in situ carbon flux observations. Micrometeoro-logical CO2 measurements at four sites in northern Europe and North America indicate that such an advance in spring recovery would have increased the January-June GPP sum by 29 g.C.m(-2) [8.4 g.C.m(-2) (3.7%)/decade]. We find this sensitivity of the measured springtime GPP to the spring recovery to be in accordance with the corresponding sensitivity derived from simulations with a land ecosystem model coupled to a global circulation model. The model-predicted increase in springtime cumulative GPP was 0.035 Pg/decade [15.5 g.C.m(-2) (6.8%)/decade] for Eurasian forests and 0.017 Pg/decade for forests in North America [9.8 g.C.m(-2) (4.4%)/decade]. This change in the springtime sum of GPP related to the timing of spring snowmelt is quantified here for boreal evergreen forests. |
英文关键词 | carbon uptake earth observation snowmelt |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413237900039 |
WOS关键词 | MICROWAVE RADIOMETER DATA ; NORTHERN ECOSYSTEMS ; CONIFEROUS FORESTS ; WATER EQUIVALENT ; GROWING-SEASON ; CO2 ; CLIMATE ; ASSIMILATION ; TEMPERATURE ; CALIBRATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/204802 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Finnish Meteorol Inst, FIN-00101 Helsinki, Finland; 2.Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland; 3.Environm & Climate Change Canada, Climate Res Div, Toronto, ON M3H 5T4, Canada; 4.Univ Saskatchewan, Global Inst Water Secur, Saskatoon, SK S7N 3H5, Canada; 5.Max Planck Inst Biogeochem, D-07701 Jena, Germany; 6.Lund Univ, Dept Phys Geog & Ecosyst Sci, SE-22362 Lund, Sweden; 7.Univ Helsinki, Dept Forest Sci, FI-00014 Helsinki, Finland; 8.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA 94721 USA; 9.Univ Helsinki, Viikki Plant Sci Ctr, FI-10014 Helsinki, Finland |
推荐引用方式 GB/T 7714 | Pulliainen, Jouni,Aurela, Mika,Laurila, Tuomas,et al. Early snowmelt significantly enhances boreal springtime carbon uptake[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(42):11081-11086. |
APA | Pulliainen, Jouni.,Aurela, Mika.,Laurila, Tuomas.,Aalto, Tuula.,Takala, Matias.,...&Vesala, Timo.(2017).Early snowmelt significantly enhances boreal springtime carbon uptake.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(42),11081-11086. |
MLA | Pulliainen, Jouni,et al."Early snowmelt significantly enhances boreal springtime carbon uptake".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.42(2017):11081-11086. |
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