The effects of reforestation on forest carbon and water coupling at multiple spatial scales

加拿大的森林资源和密切相关的流域生态系统正在发生重大变化，主要原因是大规模森林干扰增加、干扰后重新造林和气候变化的影响。这项研究的重点是重新造林如何影响两个重要的战略过程，森林碳和水，以及它们在不同空间尺度（树木，森林林分和流域水平）的相互作用。 以往的研究侧重于单个空间尺度上的森林碳和水耦合，很少关注跨尺度的比较。 虽然实验（例如，将在树木一级使用叶气体交换、液流测量），将在林分（预测-气候）和流域（RGESSys）尺度上实施建模方法。这种互补和综合的方法将为实现研究目标提供一个强有力的研究框架。将培养3名研究生和3名本科生。这种合作将大大加强我们在处理森林碳和水资源变化方面的研究和管理能力，并使我们加拿大的工业在地球仪中处于有利地位。

Canadian forest resources and closely-linked watershed ecosystems are undergoing significant change mainly due to increased large-scale forest disturbance, post-disturbance reforestation and climate change impacts. This research focuses on how reforestation affects two important and strategic processes, forest carbon and water, and their interactions across different spatial scales (tree, forest stand and watershed levels). Previous research has placed an emphasis on forest carbon and water coupling at an individual spatial scale, with rare attention on cross-scale comparisons. While experiments (e.g., leaf gas exchange, sap flow measurement) will be used at the tree level, a modeling approach will be implemented at the forest stand (FORECAST-Climate) and watershed (RGESSys) scales. Such a complementary and combined approach will provide a robust research framework for addressing the research objectives. Three graduate and 3 undergraduate students will be trained. This collaboration will greatly strengthen our research and management capacities in dealing with forest carbon and water resource changes, and place our Canadian industries in an advantageous position in the globe.