Integrating acclimation capacity of tree species into assessments of climate change impacts on Canada's boreal forest productivity**

将树种的适应能力纳入气候变化对加拿大北方森林生产力影响的评估中**

• 批准号: 521445-2018
• 负责人: Way, Danielle
• 金额: $ 18.42万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 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=668287
• 关键词: Integrating; acclimation; capacity; tree; species

Canada's forestry industry, worth over $32.7 billion in 2015, depends on productive forests, yet the**sustainability of this industry and the ecosystem services forests provide could be jeopardized by climate change. Climate change, including rising CO2 concentrations and temperatures, will be greatest at high latitudes, with warming of up to 10 °C predicted by the year 2100 in the boreal forest. Recent climate change has increased boreal tree growth in some parts of Canada, but suppressed tree growth or caused mortality in others. Understanding what drives these regional responses in forest productivity and carbon dynamics in northern Canada is particularly pressing for the Canadian Forest Service (CFS), whose mandate is to provide science and policy expertise, and advice on national forest sector issues. Understanding how rising CO2 and temperature will influence Canada's boreal forest, in particular how future carbon dynamics will respond to a changing future climate, is critical because it directly influences Canada's ability to meet international climate agreement commitments. If responses to warming and elevated CO2 vary among northern tree species, these differences in boreal forest responses to climate change may be due to variation in how tree species respond to climate change. This project will determine how elevated CO2 and temperatures affect the productivity of a diverse range of boreal tree species to determine the extent to which variation in forest growth and carbon uptake is determined by species-level variation in response to climate change. Our findings will be used by CFS to predict how the productivity and carbon dynamics of different tree species will be affected by climate change. These predictions will be used by CFS to guide public policy by informing mitigation, adaptation and forest management strategies for high latitude forests in Canada and inform estimates of future carbon dynamics of Canada's managed forest to meet Canada's international reporting requirements. ****

2015年，加拿大的林业产业价值超过327亿美元，依赖于多产的森林，但该产业的可持续性和森林提供的生态系统服务可能会受到气候变化的危害。气候变化，包括二氧化碳浓度和温度的上升，将在高纬度地区最为严重，预计到2100年北方森林将升温10°C。最近的气候变化增加了加拿大一些地区的北方树木生长，但抑制了其他地区的树木生长或造成了死亡。加拿大林业局（CFS）的任务是提供科学和政策专业知识，并就国家森林部门问题提供咨询意见，了解是什么推动了加拿大北部森林生产力和碳动态的这些区域反应，这对加拿大林业局（CFS）来说尤为紧迫。了解不断上升的二氧化碳和温度将如何影响加拿大的北方森林，特别是未来的碳动态将如何应对未来不断变化的气候，是至关重要的，因为它直接影响加拿大履行国际气候协议承诺的能力。如果北方树种对变暖和二氧化碳浓度升高的响应有所不同，那么北方森林对气候变化响应的这些差异可能是由于树种对气候变化的响应方式存在差异。该项目将确定二氧化碳和温度升高如何影响各种北方树种的生产力，以确定森林生长和碳吸收的变化在多大程度上取决于响应气候变化的物种水平变化。我们的发现将被CFS用来预测不同树种的生产力和碳动态如何受到气候变化的影响。CFS将利用这些预测来指导公共政策，为加拿大高纬度森林的缓解、适应和森林管理战略提供信息，并为加拿大管理森林未来碳动态的估计提供信息，以满足加拿大的国际报告要求。＊＊＊＊