The Role of High Latitude Ecosystems in the Global Carbon Cycle

本研究旨在阐明高纬度生态系统在全球碳循环中的作用，并评估陆地碳储量对气候瞬态变化响应的敏感性和不确定性。 这项研究将综合和整合从地方、区域和全球尺度的碳循环调查中获得的数据，并使用陆地生态系统模型（TEM）。 一旦TEM得到测试，该模型将针对历史瞬时气候运行，以将陆地碳储存的估计时空变化与通过分析大气二氧化碳历史记录估计的时空变化进行比较。 研究结果将有助于识别高纬度生态系统碳储存响应的不确定性，并评估气候变化对陆地系统的影响。

This study proposes to elucidate the role of high latitude ecosystems in the global carbon cycle and to assess the sensitivity and uncertainty of terrestrial carbon storage responses to transient changes in climate. The study will synthesize and integrate data from investigations of carbon cycling at local, regional, and global scales with the Terrestrial Ecosystem Model (TEM). Once the TEM is tested, the model will be run for the historical transient climate to compare estimated temporal and spatial variations in terrestrial carbon storage with those estimated by analysis of the historical record of atmospheric carbon dioxide. The results will be useful for identifying the uncertainty in carbon storage responses of high latitude ecosystems and for assessing the effects of climate change in terrestrial systems.