Hubbard Brook Experimental Forest: Soil Profiles (Pedons), 1995-2022

This dataset documents all pedons (soil profiles) that have been located with GPS (2 meter horizontal accuracy) and have been described by genetic horizon for the Hubbard Brook Experimental Forest, within the White Mountain National Forest, NH. Soil profiles were observed between 1995 and 2022 and have been described and sampled at two levels of detail. Soil profiles in the pedon table were dug to bedrock or into the C horizon except where high boulder content limited excavation. The depth of all major soil horizons was measured and most pedons had descriptions written and physical samples collected. The horizon table contains physical observations and chemical analyses for the horizons sampled in the pedon table. Over 2500 of these horizons have had physical samples accessioned into the Hubbard Brook sample archive; the archived mass is included in the horizon table. The reconnaissance table includes pedons observed at a lower level of detail. Small pits were generally dug to a depth of 40 cm or greater, and minimal observations, as needed, were recorded to classify the soil profile by soil map unit (hpu). These data were collected to supplement the detailed observations in the previous two data tables in support of development of a spatial model of soil distribution for the entire Hubbard Brook Experimental Forest. No samples were collected from reconnaissance pits. 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.本数据集记录了位于新罕布什尔州（NH）怀特山国家森林公园（White Mountain National Forest）内的哈伯布鲁克实验林（Hubbard Brook Experimental Forest）的全部土壤单体（pedon，即土壤剖面），此类单体均通过水平精度达2米的全球定位系统（GPS）定位，并已依据土壤发生层完成标准化描述。 土壤剖面的观测工作开展于1995年至2022年间，且按照两种详细程度分级完成描述与采样。 土壤单体数据表中的土壤剖面均被开挖至基岩或C发生层，仅在巨砾含量过高导致开挖受限时除外。所有主要土壤发生层的厚度均已测量，多数土壤单体已完成书面描述与实物样本采集。发生层数据表收录了土壤单体数据表中采样的各发生层的实物观测数据与化学分析结果；其中超过2500个发生层的实物样本已存入哈伯布鲁克样本库，存档样本的相关信息已纳入发生层数据表。 概查数据表包含了以较低详细程度观测的土壤单体。此类采样坑通常开挖至40厘米及以上深度，仅按需记录最少观测数据，以依据土壤制图单元（soil map unit, hpu）对土壤剖面进行分类。收集此类数据旨在补充前两类数据表中的详细观测内容，以支撑整个哈伯布鲁克实验林土壤分布空间模型的构建工作，且概查采样坑未采集任何样本。 本数据集作为哈伯布鲁克生态系统研究（Hubbard Brook Ecosystem Study, HBES）的一部分收集而成。哈伯布鲁克生态系统研究是在哈伯布鲁克实验林开展的协作项目，该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。