Foliar Ca, Sr and 87Sr/86Sr measurements on Watershed 1 at the Hubbard Brook Experimental Forest, 1999 - present

This dataset includes ICP-OES analyses of Ca and Sr
concentration and thermal ionization mass spectrometry
analyses of 87Sr/86Sr ratios for annual samples of Watershed
1 understory foliage. Additional foliar elements were
analysed and are included in the data table. 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.

本数据集涵盖针对1号集水区（Watershed 1）林下植被叶片年度样本的两类分析：其一为钙（Calcium, Ca）与锶（Strontium, Sr）浓度的电感耦合等离子体发射光谱（ICP-OES, Inductively Coupled Plasma Optical Emission Spectrometry）分析，其二为87Sr/86Sr比值的热电离质谱（Thermal Ionization Mass Spectrometry）分析。此外，数据表中还收录了本数据集对其他叶片相关元素的分析结果。本数据集的数据采集工作隶属于哈伯布鲁克生态研究（Hubbard Brook Ecosystem Study, HBES）。该研究是在哈伯布鲁克实验林开展的协作式研究项目，实验林由美国农业部林务局北部研究站（USDA Forest Service, Northern Research Station）运营维护。