Cedar Creek Ecosystem Science Reserve site, station Old Field 26 at Cedar Creek, study of plant biomass of Sorghastrum nutans in units of gramsPerSquareMeter 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 biomass of Sorghastrum nutans measurements in gramsPerSquareMeter units
and were aggregated to a yearly timescale.

EcoTrends项目由黛布拉·彼得斯博士（约那盆地长期生态研究网（LTER），美国农业部农业研究局约那实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究网（LTER），美国农业部林业局卢奎洛实验森林）于2004年创立，旨在支撑长期生态数据集的采集与分析工作。该项目为一项大型综合研究计划，核心目标是提升长期生态数据的可获取性与应用效能。目前已有约50个由州级及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, LTER）站点，以及由美国农业部农业研究局（ARS）、美国农业部林业局、美国能源部、美国地质调查局（USGS）及众多高校资助的各类站点。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LTER溯源感知综合跟踪架构（PASTA）的组成部分，常态化的数据汇编工作通过手动与自动两种处理模式完成更新。该网络门户由约那LTER与LTER网络办公室联合开发。下述来自雪松溪生态科学保护区（CDR）的数据集包含印第安草（Sorghastrum nutans）的生物量实测数据，单位为克每平方米，且已按年度时间尺度进行聚合。