Decision factor of tree height - from viewpoint of water relations in trees

树高的决定因素——从树木与水的关系来看

• 批准号: 23580213
• 负责人: IKEDA Takefumi
• 金额: $ 3.49万
• 依托单位: Kyoto Prefectural University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23580213/
• 关键词: 樹高限界; 水分生理; キャビテーション; 水分通道; 膨圧; 浸透調節; 国際情報交換; アメリカ合衆国; カナダ; 国際情報交流

Needles water status on the top of flatted crown in Pinus luchuensis at Miyakojma Island, Okinawa, the subtropical region was on the verge of wilting. We addressed the flat canopy formation in P.luchuensis from the standpoint of water relations. Judging from climate and geology of Miyakojima Island, P.luchuensis constantly suffered from sever water stress. Further, Miyakojima Island often is attacked by huge typhoons. Microscopic study showed that many wounds were made by mutually rushed branch. As a result of dye solution perfusion test, water conducting area of wounded part of branch was restricted to 1/2 of that of sound ones. Reducing the hydraulic conductivity in branch due to wounds induced lethal water deficit. Any further shoot growth induces a shoot die back due to wilting. This seems to cause to flattening of the upper canopy.

冲绳宫古岛绿皮松扁平树冠顶部针叶水分状况亚热带地区濒临枯萎。我们从水分关系的角度对芦竹的平顶形成进行了探讨。从宫古岛岛的气候和地质情况来看，芦竹不断遭受严重的水分胁迫。此外，宫古岛岛经常受到巨大台风的袭击。光镜观察显示，多处创口是由相互挤压的树枝造成的。经染料溶液灌流试验，伤处导水面积仅为健侧的1/2。伤后枝条导水率降低，导致致死性水分亏缺。任何进一步的枝条生长都会由于枯萎而导致枝条枯萎。这似乎会导致上部树冠变平。

项目成果

リュウキュウマツの衰弱・枯死に関する水分生理学的研究

水分对琉球松衰退和死亡的生理研究

• 发表时间: 2012
• 作者: 池田武文;五艘佑揮;上田正文
• 通讯作者: 上田正文

Needle browning and death in the flagged crown of Abies mariesii in the timberline ecotone of the alpine region in central Japan

• DOI: 10.1007/s00468-012-0836-y
• 发表时间: 2013-06-01
• 期刊: TREES-STRUCTURE AND FUNCTION
• 影响因子: 2.3
• 作者: Nakamoto, Aoi;Ikeda, Takefumi;Maruta, Emiko
• 通讯作者: Maruta, Emiko

Nedle browning and death in the flagged crown of Abies mariesii in the timberline ecotomne of the alpine region in central Japan

日本中部高山地区林线生态区冷杉旗冠的针叶褐变和死亡

• 发表时间: 2013
• 期刊: Trees
• 作者: Nakamoto,A.;Ikeda,T. and Maruta,E.
• 通讯作者: Ikeda,T. and Maruta,E.

Water relations in declining Pinus luchuensis at Miyakojima Island, the subtropical region of Japan

日本亚热带宫古岛琉球松衰退中的水关系

• 发表时间: 2013
• 作者: Ikeda,T.;Goso,Y.;and Ueda,M.
• 通讯作者: and Ueda,M.

Vulnerability to branch xylem cavitation in Prunus x yedoensis can predict tree decline

樱花枝条木质部空化的脆弱性可以预测树木衰退

• 发表时间: 2011
• 作者: Ikeda,T.;他4名
• 通讯作者: 他4名