Jornada Basin LTER/Jornada Experimental Range site, station Jornada Experimental Range Tarbush Plots, study of aboveground net primary productivity in units of gramsPerMeterSquaredPerYear 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 Jornada Basin LTER/Jornada Experimental Range (JRN) contains aboveground net primary productivity measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.EcoTrends项目于2004年由黛布拉·彼得斯博士（约尔达达盆地长期生态研究站，美国农业部农业研究服务局约尔达达实验牧场）与阿里尔·卢戈博士（卢奎约长期生态研究站，美国农业部林务局卢奎约实验林）创立，旨在支撑长期生态数据集的采集与分析工作。该项目为一项大型综合研究计划，核心目标是提升长期数据的可获取性与使用效率。目前，已有约50个由州政府及联邦政府资助的研究站点参与EcoTrends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, LTER）站点，以及由美国农业部农业研究服务局（USDA Agriculture Research Service, ARS）、美国农业部林务局、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。该探索性网络门户依托交互式Web应用，支持用户持续开展数据汇编与数据获取操作。作为LTER溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，持续进行的数据汇编工作通过人工与自动两种处理方式完成更新。该网络门户是约尔达达LTER与LTER网络办公室的合作成果。以下来自约尔达达盆地LTER/约尔达达实验牧场（JRN）的数据集，包含以克每平方米每年为单位的地上净初级生产力测量值，且已被聚合至年度时间尺度。