Luquillo Experimental Forest site, station Juncos County, PR (FIPS 72077), study of population employed at farms (percent of total) in units of percent 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 Luquillo Experimental Forest (LUQ)
contains population employed at farms (percent of total) measurements in percent units
and were aggregated to a yearly timescale.

EcoTrends项目由Debra Peters博士（乔纳达盆地长期生态研究站[LTER]，美国农业部农业研究局[USDA-ARS]乔纳达实验牧场）与Ariel Lugo博士（卢基略长期生态研究站[LTER]，美国农业部林务局[USDA-FS]卢基略实验森林）于2004年创立，旨在支持长期生态数据集的采集与分析工作。
该项目是一项大型综合研究工程，核心目标为提升长期数据的可获取性与使用效率。目前已有约50个州级与联邦资助的研究站点参与并向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，简称LTER）站点，以及美国农业部农业研究服务局（USDA ARS）、美国农业部林务局（USDA FS）、美国能源部、美国地质调查局（USGS）与众多高校资助的站点。
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Web应用程序，支持用户持续开展数据汇编与数据共享工作。
作为溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture，简称PASTA）的组成部分，其持续的数据汇编工作通过人工与自动处理两种方式完成更新。
该网络门户由乔纳达LTER站点与LTER网络办公室合作开发。
以下来自卢基略实验森林（LUQ）的数据集，包含农场就业人员占总就业人数比例（单位为百分比）的测量数据，且已聚合至年度时间尺度。