globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1707889114
论文题名:
Early snowmelt significantly enhances boreal springtime carbon uptake
作者: Pulliainen J.; Aurela M.; Laurila T.; Aalto T.; Takala M.; Salminen M.; Kulmala M.; Barr A.; Heimann M.; Lindroth A.; Laaksonen A.; Derksen C.; Mäkelä A.; Markkanen T.; Lemmetyinen J.; Susiluoto J.; Dengel S.; Mammarella I.; Tuovinen J.-P.; Vesala T.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2017
卷: 114, 期:42
起始页码: 11081
结束页码: 11086
语种: 英语
英文关键词: Carbon uptake ; Earth observation ; Snowmelt
Scopus关键词: carbon ; carbon dioxide ; snow ; Article ; carbon balance ; carbon sink ; ecosystem ; Europe ; North America ; Northern Hemisphere ; priority journal ; simulation ; spring ; taiga
英文摘要: We determine the annual timing of spring recovery from spaceborne 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. © 2017, National Academy of Sciences. All rights reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162106
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Pulliainen, J., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Aurela, M., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Laurila, T., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Aalto, T., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Takala, M., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Salminen, M., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Kulmala, M., Department of Physics, University of Helsinki, Helsinki, FI-00014, Finland; Barr, A., Climate Research Division, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada, Global Institute for Water Security, University of Saskatchewan, Saskatoon, SK S7N 3H5, Canada; Heimann, M., Max Planck Institute for Biogeochemistry, Jena, 07701, Germany, Department of Physics, University of Helsinki, Helsinki, FI-00014, Finland; Lindroth, A., Department of Physical Geography and Ecosystems Science, Lund University, Lund, SE-22362, Sweden; Laaksonen, A., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Derksen, C., Climate Research Division, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada; Mäkelä, A., Department of Forest Sciences, University of Helsinki, Helsinki, FI-00014, Finland; Markkanen, T., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Lemmetyinen, J., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Susiluoto, J., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Dengel, S., Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94721, United States; Mammarella, I., Viikki Plant Science Centre, University of Helsinki, Helsinki, FI-00014, Finland; Tuovinen, J.-P., Finnish Meteorological Institute, Helsinki, FIN-00101, Finland; Vesala, T., Department of Physics, University of Helsinki, Helsinki, FI-00014, Finland, Department of Forest Sciences, University of Helsinki, Helsinki, FI-00014, Finland, Viikki Plant Science Centre, University of Helsinki, Helsinki, FI-00014, Finland

Recommended Citation:
Pulliainen J.,Aurela M.,Laurila T.,et al. Early snowmelt significantly enhances boreal springtime carbon uptake[J]. Proceedings of the National Academy of Sciences of the United States of America,2017-01-01,114(42)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Pulliainen J.]'s Articles
[Aurela M.]'s Articles
[Laurila T.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Pulliainen J.]'s Articles
[Aurela M.]'s Articles
[Laurila T.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Pulliainen J.]‘s Articles
[Aurela M.]‘s Articles
[Laurila T.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.