Chemistry of freely-draining soil solutions at the Hubbard Brook Experimental Forest, Watershed 1, 1996 - present.

Tension-free lysimeters were installed in three soil horizons at 13
locations within Hubbard Brook Experimental Forest Watershed 1,
representing the variation in elevation and forest type of the
watershed. At each location, the organic horizon and the B horizon
were selected for lysimeter placement. Soil solution samples were
collected approximately monthly and analyzed for base cations, soluble
anions, trace metals, nitrogen and carbon.

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.

无张力蒸渗仪（tension-free lysimeters）在哈伯德布鲁克实验林（Hubbard Brook Experimental Forest）1号流域内的13个地点、三个土壤层位中安装，以代表该流域海拔和森林类型的变化。每个地点均选择有机层和B层放置蒸渗仪。土壤溶液样本约每月采集一次，分析内容包括碱阳离子、可溶性阴离子、痕量金属、氮和碳。

这些数据是哈伯德布鲁克生态系统研究（Hubbard Brook Ecosystem Study, HBES）的一部分。HBES是在哈伯德布鲁克实验林开展的合作项目，该实验林由美国农业部林务局北方研究站（USDA Forest Service, Northern Research Station）运营和维护。