Acclimating mechanisms of dwarf bamboos dominating understory layers in a beech forest

Research Project

Project/Area Number	15K07828
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Environmental agriculture(including landscape science)
Research Institution	Okayama University
Principal Investigator	Sakamoto Keiji 岡山大学, 環境生命科学研究科, 教授 (90205766)
Co-Investigator(Kenkyū-buntansha)	廣部宗岡山大学, 環境生命科学研究科, 教授 (20363575)
Project Period (FY)	2015-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000) Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords	矮性タケ類 / ブナ林 / フェノロジカルギャップ / 光合成速度 / 稈密度 / 林冠構造 / チシマザサ / 葉面積 / 生理生態 / 葉の寿命 / 稈の寿命 / 光環境
Outline of Final Research Achievements	We have demonstrated the acclimating mechanisms of dwarf bamboo, Sasa kurilensis, to the different light conditions in the understory of a beech forest. Density and biomass of S. kurilensis were significantly largest under the gap, and smallest under the canopy trees of Fagus crenata. Maximum photosynthetic rate per a culm was estimated from the photosynthetic rate per a unit leaf area, leaf areas, and leaf numbers of a culm. The values were lowest under the canopy trees of F. crenata, and significant differences were not detected between the values under the gap and the canopy trees of Magnolia obovata. S. kurlensis dominates the understory in a beech forest by the acclimatization in the different light conditions caused by different canopy types.