Response to drought stress in tropical rain forest trees

热带雨林树木对干旱胁迫的响应

• 批准号: 21688011
• 负责人: ICHIE Tomoaki
• 金额: $ 8.24万
• 依托单位: Kochi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21688011/
• 关键词: 熱帯雨林; 東南アジア; ストレス応答; フタバガキ科; 気候変動; 一斉開花; 林冠; 乾燥耐性; 操作実験; マレーシア:シンガポール; 熱帶雨林

I studied the drought tolerance and related morphological and physiological traits of tropical trees to evaluate interspecific difference in response to drought stress, because in the tropical areas of Southeast Asia, the decreased precipitation and increased frequency of short-term drought are predicted with global warming. Morphological characteristics of tropical canopy species are closely related with their water use strategies ; species with high photosynthetic and transpiration abilities have large vessel diameter, but large water stress in the daytime, and then high mortality rates during severe drought. In addition, experimental drought treatment induced a high drought tolerance in a tropical emergent species, Dryobalanops aromatica, by the increase of water extraction efficiency, and then saving its water consumption during drought.

我研究了热带树木的耐旱性以及相关的形态和生理特征，以评估对干旱胁迫的响应的种间差异，因为在东南亚热带地区，随着全球变暖，预计降水量减少和短期干旱频率增加。热带树冠物种的形态特征与其水分利用策略密切相关；光合蒸腾能力强的物种，导管直径大，但白天水分胁迫大，严重干旱时死亡率高。此外，实验性干旱处理通过提高水分提取效率，诱导了热带挺水植物芳香树的高耐旱性，从而节省了干旱期间的耗水量。

项目成果

フタバガキ科林冠構成種の葉の形態に及ぼす光環境や生育段階の影響

光环境和生长阶段对龙脑香科冠层植物叶片形态的影响

• 发表时间: 2011
• 作者: 市栄智明

Resource allocation to reproduction in a tropical emergent tree species, Dryobalanops aromatica.

热带新兴树种芳香树的繁殖资源分配。

• 发表时间: 2010
• 作者: Tomoaki Ichie

Relationship betwwen leaf flushing phenology and defensive traits in canopytrees of five dipterocarp species in a tropical rain forest.

热带雨林五种龙脑香树冠层叶片冲水物候与防御性状的关系。

• 发表时间: 2010
• 作者: Aogu Yoneyama

Water use characteristics of homobaric and heterobaric leaf species

同压和异压叶种的水分利用特征

• 发表时间: 2010
• 作者: Inoue; Y.; Kenzo T.;Ichie; T
• 通讯作者: T

Interspecific variation in leaf water use associated with drought tolerance in four emergent dipterocarp species of a tropical rain forest in Borneo

婆罗洲热带雨林四种新兴龙脑香科植物叶片水分利用与耐旱性相关的种间差异

• DOI: 10.1007/s10310-011-0303-4
• 发表时间: 2012
• 影响因子: 1.5
• 作者: Toru Hiromi