Coweeta site, station Sevier County, TN (FIPS 47155), study of county area in units of squareKilometers 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 Coweeta (CWT)
contains county area measurements in squareKilometers 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，USDA-ARS乔纳达实验牧场）与Ariel Lugo博士（卢奎洛长期生态研究站，USDA-FS卢奎洛实验林）于2004年创立，旨在支撑长期生态数据集的采集与分析工作。本项目属于大型综合研究计划，核心目标为提升长期生态数据的可访问性与应用价值。目前共有约50个州级及联邦资助的研究站点参与本项目并贡献数据，其中涵盖全部26个长期生态研究（Long-Term Ecological Research，简称LTER）站点，以及由USDA农业研究服务局（USDA Agriculture Research Service, ARS）、USDA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。作为LTER溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture，简称PASTA）的组成部分，常态化的数据汇编工作通过人工与自动两种处理方式完成更新。本网络门户由乔纳达LTER站点与LTER网络办公室合作开发。本次来自科韦塔（Coweeta, CWT）的数据集包含以平方千米为单位的县域面积测量数据，且已按年度时间尺度进行聚合。