Hydraulic control on water use, growth and survival in tropical rainforest

热带雨林用水、生长和生存的水力控制

• 批准号: DP170104091
• 负责人: Prof Patrick Meir
• 金额: $ 31.3万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-06-23 至 2020-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP170104091
• 关键词: Hydraulic; control; water; use; growth

This project aims to measure drought-related limits to water transport in the woody xylem tissue of trees in Australian tropical rainforests, to understand how this influences tree water use, photosynthesis, health and mortality risk. Tropical rainforests are sensitive to climate variability, especially drought, but this sensitivity is poorly understood, despite large effects regionally and globally. This project will compare forests that contrast strongly in seasonal drought stress, and use the information to develop a model designed for species-diverse forest, with subsequent potential global application. The understanding gained will enable widely applicable advances designed to feed through rapidly to regional- and global-scale models that inform land use, economic and social policy-making.

该项目旨在测量澳大利亚热带雨林树木木质部组织中与干旱相关的水分运输限制，以了解这如何影响树木的水分利用、光合作用、健康和死亡风险。热带雨林对气候变化特别是干旱很敏感，但人们对这种敏感性知之甚少，尽管它对区域和全球产生了巨大影响。该项目将比较季节性干旱胁迫对比强烈的森林，并利用这些信息开发专为物种多样性森林设计的模型，并随后在全球范围内应用。所获得的理解将实现广泛适用的进步，这些进步旨在快速融入区域和全球规模的模型，为土地利用、经济和社会决策提供信息。