PostDoctoral Research Fellowship

这个奖项是为博士后奖学金。 调查人员将研究地表能量收支，以提高我们对阿拉斯加北方树线树木生长控制的理解。树线位置对高纬度地区的地表生态、大气环流和微量气体交换有重要意义。为了验证这一假设，土壤水和氮的有效性发挥直接和间接的控制树木生长沿着水文连续林线环境，土壤水分和氮的预算将被操纵，以检查它们的相互作用和它们的影响在树线的增长。从这项研究中可以预期的结果将提高我们在气候变化中预测树线变化的能力。

This award is for a postdoctoral fellowship. The investigator will study the surface energy budget to improve our understanding of the controls on tree growth at the treeline in northern Alaska. Treeline positions have important implications for the surface ecology, the atmospheric circulation, and trace gas exchange in high-latitude landscapes. To test the hypothesis that soil water and nitrogen availability exert direct and indirect controls on tree growth along the hydrologic continuum in treeline environments, the soil moisture and nitrogen budgets will be manipulated to examine their interaction and their implications for growth at the treeline. The results that can be expected from this study would improve our ability to predict treeline shifts in a changing climate.