Baltimore Ecosystem Study LTER site, station NADP Station MD13, Wye, MD, study of nitrogen from nitrate in wet deposition in units of kilogramsPerHectare on a monthly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters
(Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and
Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest)
to support the collection and analysis of long-term ecological datasets.
The project is a large synthesis effort focused on improving the accessibility
and use of long-term data. At present, there are ~50 state and federally funded
research sites that are participating and contributing to the EcoTrends project,
including all 26 Long-Term Ecological Research (LTER) sites and sites funded by
the USDA Agriculture Research Service (ARS), USDA Forest Service,
US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal
(http://www.ecotrends.info). This web portal enables the continuation of data
compilation and accessibility by users through an interactive web application.
Ongoing data compilation is updated through both manual and automatic
processing as part of the LTER Provenance Aware Synthesis Tracking
Architecture (PASTA). The web portal is a collaboration between the Jornada LTER
and the LTER Network Office. The following dataset from Baltimore Ecosystem Study LTER (BES)
contains nitrogen from nitrate in wet deposition measurements in kilogramsPerHectare units
and were aggregated to a monthly timescale.

EcoTrends项目由黛布拉·彼得斯博士（约拿盆地长期生态研究（Long-Term Ecological Research, LTER）、美国农业部农业研究局（USDA-ARS）约拿实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究（Long-Term Ecological Research, LTER）、美国农业部林业局（USDA-FS）卢奎洛实验森林）于2004年创立，旨在支撑长期生态数据集的采集与分析工作。该项目为大型综合研究计划，核心聚焦于提升长期生态数据的可访问性与应用效能。目前共有约50个州级与联邦资助的研究站点参与并为EcoTrends项目贡献数据，其中涵盖全部26个长期生态研究（Long-Term Ecological Research, LTER）站点，以及由美国农业部农业研究局（USDA-ARS）、美国农业部林业局（USDA-FS）、美国能源部、美国地质调查局（United States Geological Survey, USGS）资助的站点与众多高校站点。EcoTrends项目的数据可通过探索性网络门户（http://www.ecotrends.info）获取。该网络门户依托交互式网页应用，支持用户持续开展数据汇编与数据访问工作。依托长期生态研究网溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA），项目通过人工与自动结合的处理方式对持续进行的数据汇编工作进行更新。该网络门户由约拿LTER站点与LTER网络办公室合作搭建。以下来自巴尔的摩生态系统研究长期生态研究网（Baltimore Ecosystem Study LTER, BES）的数据集，包含以千克每公顷为单位的湿沉降硝酸盐氮实测数据，且已按月度时间尺度完成聚合。