Palmer Station site, station Palmer Station, study of primary production, measured as carbon 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 Palmer Station (PAL) contains primary production, measured as carbon measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.

生态趋势（EcoTrends）项目由黛布拉·彼得斯博士（约塔纳盆地长期生态研究（Long-Term Ecological Research, LTER）场地、美国农业部农业研究服务局（USDA-ARS）约塔纳实验牧场）与阿里尔·卢戈博士（卢奎略长期生态研究场地、美国农业部林业局（USDA-FS）卢奎略实验森林）于2004年创立，旨在支持长期生态数据集的采集与分析。该项目是一项大型综合研究工作，致力于提升长期数据的可获取性与应用率。目前，共有约50个由州及联邦资助的研究站点参与并为生态趋势项目贡献数据，其中涵盖全部26个长期生态研究（LTER）站点，以及由美国农业部农业研究服务局（ARS）、美国农业部林业局、美国能源部、美国地质调查局（USGS）和多所高校资助的站点。生态趋势项目的数据集可通过探索式网络门户（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获取工作。作为长期生态研究（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处理相结合的方式完成更新。该网络门户由约塔纳LTER与LTER网络办公室联合打造。本次提供的帕尔默站（PAL）数据集包含初级生产力数据，该数据以碳通量计量，单位为克每平方米每年，并已聚合至年时间尺度。