Hubbard Brook Nitrogen Oligotrophication (HBNO): Leaf mass per area

This data set encompasses leaf area and dry weights for collected freshly shot leaves (early August) and fallen leaves (entire leaf fall period) along the elevation gradient of 14 sites used for the nitrogen oligotrophication study at Hubbard Brook Experimental Forest. This data will be used to calculate nutrient resorption along the elevation gradient for sugar maple (collection years: 2020-2022) and American beech (2021-2022). These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.

本数据集涵盖哈伯布鲁克实验林（Hubbard Brook Experimental Forest）氮贫化（nitrogen oligotrophication）研究中，沿14个样地海拔梯度采集的新抽生叶片（八月上旬采集）与全落叶期落叶的叶面积及干重数据。该数据将用于计算糖枫（2020-2022年采样）与美洲山毛榉（2021-2022年采样）沿海拔梯度的养分回收效率。本数据集的采集工作隶属于哈伯布鲁克生态研究计划（Hubbard Brook Ecosystem Study, HBES），该计划是在哈伯布鲁克实验林开展的合作研究项目，由美国农业部林务局（USDA Forest Service）北方研究站运营维护。