Is physiological flexibility of forest trees constrained by home climate in a rapidly warming world?

在快速变暖的世界中，森林树木的生理灵活性是否受到家乡气候的限制？

• 批准号: DP140103415
• 负责人: Prof Mark Tjoelker
• 金额: $ 22.02万
• 依托单位: Western Sydney University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-15 至 2017-12-22
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140103415
• 关键词: physiological; flexibility; forest; trees; constrained

The projected average Australian climate warming of 3 degrees celsius by 2070 represents a shift in climate equivalent to moving 900 km from Sydney to Brisbane. As forest trees cannot migrate fast enough to avoid these unprecedented increases in temperature, the resiliency of Australian forests to climate warming will depend on their capacity to physiologically adjust to higher temperatures. But, can forest trees successfully adjust to new climates in their current locations? This project plans to determine how thermal acclimation influences leaf and tree carbon exchange, and whether this depends upon a tree’s “home” climate. These knowledge gaps limit our ability to predict the future of our forests and consequences for carbon cycling in a warmer world.

到2070年，预计澳大利亚平均气候变暖3摄氏度，这意味着气候变化相当于从悉尼到布里斯班移动900公里。由于森林树木无法快速迁移以避免这些前所未有的温度上升，澳大利亚森林对气候变暖的弹性将取决于它们对更高温度的生理适应能力。但是，森林树木能成功地适应新的气候吗？该项目计划确定热驯化如何影响树叶和树木的碳交换，以及这是否取决于树木的“家”气候。这些知识差距限制了我们预测森林未来的能力，也限制了我们预测全球变暖对碳循环的影响。