Cedar Creek Ecosystem Science Reserve site, station Old Field 45 at Cedar Creek, study of plant biomass of Agropyron repens 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 Agropyron repens 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LTER站点，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LTER站点，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率。目前共有约50个由州级及联邦政府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, 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）及众多高校资助的相关站点。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，为用户提供持续的数据汇编与数据访问服务。作为长期生态研究溯源感知综合跟踪架构（PASTA）的组成部分，持续开展的数据汇编工作通过人工与自动两种处理方式完成更新。该网络门户由约那盆地LTER站点与LTER网络办公室联合开发。以下来自雪松溪生态系统科学保护区（CDR）的数据集，包含以克每平方米为单位的匍匐冰草（Agropyron repens）生物量测量值，且已按年尺度完成聚合。