Consideration of leaf properties for estimating branch respiration
Project/Area Number |
24780157
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Forest science
|
Research Institution | Shizuoka University |
Principal Investigator |
IIO Atsuhiro 静岡大学, 農学部, その他 (90422740)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
Keywords | 樹皮呼吸 / 葉特性 / ブナ / サイズ / 枝幹呼吸 / 枝の呼吸速度 |
Outline of Final Research Achievements |
For more accurate and efficient estimation of above ground wood respiration, I have validated a hypothesis that above ground wood respiration is determined by leaf properties at edge of woody organ but not by size of organ (e.g. diameter, volume). I thus measured spatial variations in wood respiration at 161 locations in 14 years old beech trees, in relation to total leaf weight at edge of organ, size and age of organ. However, by contrast to my expectation, the best factor explaining spatial variations in above ground wood respiration was size of organ but not leaf weight. This means that changes in foliage carbon gain have no influence on wood respiration. For suppressed trees and branches in shaded conditions, woody organs accumulated in past will make their carbon use efficiency worse significantly.
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Report
(4 results)
Research Products
(6 results)