globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13780
论文题名:
Tree-ring analysis and modeling approaches yield contrary response of circumboreal forest productivity to climate change
作者: Tei S.; Sugimoto A.; Yonenobu H.; Matsuura Y.; Osawa A.; Sato H.; Fujinuma J.; Maximov T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Boreal forest ; Climate change ; Climate sensitivity ; DGVM ; ITRDB ; Tree ring
英文摘要: Circumboreal forest ecosystems are exposed to a larger magnitude of warming in comparison with the global average, as a result of warming-induced environmental changes. However, it is not clear how tree growth in these ecosystems responds to these changes. In this study, we investigated the sensitivity of forest productivity to climate change using ring width indices (RWI) from a tree-ring width dataset accessed from the International Tree-Ring Data Bank and gridded climate datasets from the Climate Research Unit. A negative relationship of RWI with summer temperature and recent reductions in RWI were typically observed in continental dry regions, such as inner Alaska and Canada, southern Europe, and the southern part of eastern Siberia. We then developed a multiple regression model with regional meteorological parameters to predict RWI, and then applied to these models to predict how tree growth will respond to twenty-first-century climate change (RCP8.5 scenario). The projections showed a spatial variation and future continuous reduction in tree growth in those continental dry regions. The spatial variation, however, could not be reproduced by a dynamic global vegetation model (DGVM). The DGVM projected a generally positive trend in future tree growth all over the circumboreal region. These results indicate that DGVMs may overestimate future wood net primary productivity (NPP) in continental dry regions such as these; this seems to be common feature of current DGVMs. DGVMs should be able to express the negative effect of warming on tree growth, so that they simulate the observed recent reduction in tree growth in continental dry regions. © 2017 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61138
Appears in Collections:影响、适应和脆弱性

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作者单位: Faculty of Environmental Earth Science Hokkaido University Sapporo Japan; National Institute of Polar Research Tachikawa Japan; College of Education Naruto University of Education Naruto Japan; Forestry and Forest Products Research Institute Tsukuba Japan; Graduate School of Global Environmental studies Kyoto University Kyoto Japan; Institute of Arctic Climate and Environment Research Japan Agency for Marine-Earth Science and Technology Yokohama Japan; Graduate School of Environmental Science Hokkaido University Sapporo Japan; Institute for Biological Problem of Cryolithozone Siberian Division of Russian Academy of Sciences Yakutsk Russia; Institute of Natural SciencesNorth-Eastern Federal University Yakutsk Russia; Arctic Research Center Hokkaido University Sapporo Japan

Recommended Citation:
Tei S.,Sugimoto A.,Yonenobu H.,et al. Tree-ring analysis and modeling approaches yield contrary response of circumboreal forest productivity to climate change[J]. Global Change Biology,2017-01-01
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