Harvard Forest site, station Hillsborough County, NH (FIPS 33011), study of number of farms in units of number on a yearly 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 Harvard Forest (HFR)
contains number of farms measurements in number units
and were aggregated to a yearly timescale.

EcoTrends项目于2004年由黛布拉·彼得斯博士（约尔纳达盆地长期生态研究站点，USDA-ARS约尔纳达实验牧场）与阿里尔·卢戈博士（卢奎略长期生态研究站点，USDA-FS卢奎略实验森林）创立，旨在支撑长期生态数据集的收集与分析工作。
本项目为大型综合研究计划，核心致力于提升长期生态数据的可获取性与应用价值。
目前，共有约50个由州政府与联邦政府资助的研究站点参与EcoTrends项目并为其贡献数据，其中包含全部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服务局（USDA Agriculture Research Service, ARS）、美国农业部森林服务局、美国能源部、美国地质调查局（US Geological Survey, USGS）及众多高校资助的研究站点。
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获取工作。作为长期生态研究站点溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，持续推进的数据汇编工作通过手动与自动两种处理方式完成更新。本网络门户由约尔纳达长期生态研究站点与长期生态研究网络办公室联合共建。
本次提供的哈佛森林（Harvard Forest, HFR）数据集包含以数值单位计量的农场数量观测数据，并已按年度时间粒度进行聚合。