| Project/Area Number |
23658127
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Forest science
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
OKADA Naoki 京都大学, 地球環境学堂, 准教授 (40335302)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SEINO Tatsuyuki 筑波大学, 大学院・生命環境科学研究科(系), 准教授 (40362420)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
|
|---|
| Keywords | 熱帯樹木 / 成長輪 / 形成層 / 高電圧パルス / 形成層マーキング / タイ / 半島マレーシア / 湿潤熱帯 / 季節熱帯 |
|---|
| Research Abstract |
DC high voltage pulse was applied to tree cambium to develop an effective cambial marking method for estimating tree growth of ring-less tropical trees. In addition, bio-impedance of tree cambium was also monitored for estimating seasonal changes of cambial activity. Temperate tree species formed abnormal cells and tissues by treating 300-500 v. The degree of abnormal tissue formation was different by species, but common features were observed as follows: (1) formation of thick-walled vessel element and wood fibers, (2) increase in tangential row of ray cells, and formation of abnormal-shaped ray parenchyma cells, and (3) formation of colored-substances in parenchyma cells. The value of impedance showed seasonal changes, probably reflecting the difference of cambial activity.
|
