Journal
AGRICULTURAL AND FOREST METEOROLOGY
Volume 150, Issue 7-8, Pages 1026-1029Publisher
ELSEVIER
DOI: 10.1016/j.agrformet.2010.04.001
Keywords
Canopy crane; Field experiments; Global warming; Leaf fall; Masting
Categories
Funding
- Tomakomai Research Station, Hokkaido University
- Japanese Ministry of Education, Science, Sports, and Culture of Japan [21870002, 19657007, 21248017]
- JSPS
- Ministry of Environment
- Grants-in-Aid for Scientific Research [21248017, 21870002, 19657007] Funding Source: KAKEN
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An increasing number of field experiments have been initiated worldwide to study simulated effects of global warming. To experimentally determine how tall, mature trees respond to warming, we developed a new technique that heated canopy-level branches with electric heating cables. Using a canopy crane, we attached electric cables to top canopy branches of tall, mature Quercus crispula Blume (18-20 m in height) trees; shoot temperature was elevated 5 degrees C above ambient. Branch warming extended the length of the growing season of canopy leaves by later leaf fall. Moreover, branch warming increased acorn production. Application of this technique should lead to a better understanding of how tall, mature trees respond to global warming. (C) 2010 Elsevier B.V. All rights reserved.
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