Age of Nonstructural Carbohydrates in Four Tree Species at Harvard Forest 2015

We estimated the mean age of sugars within and between different organs of four temperate tree species using the radiocarbon (carbon-14) bomb spike approach. Radial patterns of carbon-14 in the stemwood and coarse roots showed that sugars tended to became older when moving towards the pith.我们采用放射性碳（carbon-14）炸弹峰法，估算了4种温带树种不同器官内部及器官间糖类的平均年龄。树干材与粗根中的碳-14径向分布模式显示，糖类向髓心移动时其年龄往往会增大。