期刊
DENDROCHRONOLOGIA
卷 29, 期 2, 页码 109-114出版社
ELSEVIER GMBH
DOI: 10.1016/j.dendro.2009.10.004
关键词
Cross-sectional earlywood vessel lumen area; Fraxinus nigra; Ring-porous; Forest fire
资金
- Canada Research Chairs Program
- Natural Sciences and Engineering Research Council of Canada
- University of Winnipeg
- University of Manitoba
Earlywood, latewood, total ring width and cross-sectional earlywood vessel lumen areas were measured in twenty-one Fraxinus nigra trees located in the southern boreal region of Quebec, Canada. Two of the trees survived a severe fire in 1923 during which year almost no latewood was produced. In 1924 both trees produced rings with a strong decrease in the size of the largest earlywood vessels. This synchronized size decrease in cross-sectional earlywood vessel lumen area was not observed in other years and is likely a response of the trees to either direct injury or changes in environmental conditions associated with fire. Vessel characteristics in ring-porous species have the potential to be used in conjunction with other indicators of fire to extend fire history reconstructions on a spatial scale. (C) 2010 Elsevier GmbH. All rights reserved.
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