How will Global Change Affect Function Of Future Trees and Forests

全球变化将如何影响未来树木和森林的功能

• 批准号: RGPIN-2015-06514
• 负责人: Ensminger, Ingo
• 金额: $ 1.75万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=650244
• 关键词: How; will; Global; Change; Affect

The consequences of global climate change, with elevated temperature, altered precipitation patterns, and the increased frequency of extreme events such as heat waves and drought alters the function of northern trees and forests. Their response to a changing climate already impacts carbon sequestration, productivity, and survival, with potentially large effects on species distribution and the global carbon cycle. However, we currently lack a detailed understanding of how future climate will affect the physiological and molecular responses of northern trees and forests. Such data are crucial to our understanding and potentially mitigating the effects of climate change. The proposed research program therefore aims to determine the sensitivity of trees and forests to environmental change, from the molecular through to the species and ecosystem levels. It will assess how climatic changes impact photosynthetic processes, carbon metabolism, water relations and productivity of Canadian tree species at various scales. This includes the use of experimental growth chambers, field manipulations, and long-term monitoring field sites. The unique data obtained through this program will reveal how tree function is modified in response to global change factors such as increased temperature, and drought. The combination of different experimental scales and the use of molecular and physiological approaches will allow for validation of data across scales, the estimation of changes in productivity, and will help to assess adaptability and plasticity of tree species to climatic change. These results will be used to inform selection or screening strategies for tree genotypes or populations for improvement programs, and for forestry management, planning, and conservation. This research program will therefore help to sustain ecologically and economically important tree species in a future climate with benefits to the environment and forestry sector.

全球气候变化的后果，包括气温升高、降水模式改变以及热浪和干旱等极端事件的频率增加，改变了北方树木和森林的功能。它们对气候变化的反应已经影响到碳固存、生产力和生存，并可能对物种分布和全球碳循环产生巨大影响。但我们目前对未来气候将如何影响北方树木和森林的生理和分子反应缺乏详细的了解。这些数据对于我们理解和可能减轻气候变化的影响至关重要。因此，拟议的研究计划旨在确定树木和森林对环境变化的敏感性，从分子到物种和生态系统水平。它将评估气候变化如何影响光合作用过程，碳代谢，水的关系和生产力的加拿大树种在不同的规模。这包括使用实验生长室，现场操作和长期监测现场。通过该程序获得的独特数据将揭示树木功能如何响应全球变化因素（如温度升高和干旱）而进行修改。不同实验尺度的结合以及分子和生理学方法的使用将允许跨尺度数据的验证，生产力变化的估计，并将有助于评估树种对气候变化的适应性和可塑性。这些结果将用于为树木基因型或种群的选择或筛选策略提供信息，用于改进计划，以及林业管理，规划和保护。因此，这项研究计划将有助于在未来的气候中维持生态和经济上重要的树种，并对环境和林业部门有利。