Cedar Creek Ecosystem Science Reserve site, station Old Field 26 at Cedar Creek, study of plant cover of Sorghastrum nutans 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 Cedar Creek Ecosystem Science Reserve (CDR)
contains plant cover of Sorghastrum nutans measurements in percent units
and were aggregated to a yearly timescale.

EcoTrends项目于2004年由黛布拉·彼得斯博士（霍拉盆地长期生态研究站，美国农业部农业研究局[USDA-ARS]霍拉实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究站，美国农业部林务局[USDA-FS]卢奎洛实验森林）创立，旨在支撑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作，核心目标为提升长期生态数据的可获取性与利用率。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，简称LTER）站点，以及由美国农业部农业研究局、美国农业部林务局、美国能源部、美国地质调查局与众多高校资助的研究站点。EcoTrends项目的数据集可通过探索性网络门户（http://www.ecotrends.info）获取。该网络门户借助交互式网页应用程序，可实现数据汇编的持续推进，并向用户开放数据获取渠道。作为长期生态研究溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture，简称PASTA）的组成部分，正在进行的数据汇编工作通过手动与自动两种处理方式完成更新。该网络门户由霍拉盆地LTER与LTER网络办公室合作开发。本数据集来自雪松溪生态科学保护区（CDR），包含以百分比为单位的拟高梁（Sorghastrum nutans）植被盖度测量数据，且已按年度时间尺度进行聚合。