California Current Ecosystem site, station San Diego County, CA (FIPS 6073), study of county area in units of squareKilometers 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 California Current Ecosystem (CCE)
contains county area measurements in squareKilometers units
and were aggregated to a yearly timescale.

EcoTrends项目于2004年由黛布拉·彼得斯博士（约尔达盆地长期生态研究站，美国农业部农业研究服务局约尔达实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究站，美国农业部林业局卢奎洛实验森林）创立，旨在支持长期生态数据集的采集与分析工作。
本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利用效率。
目前，已有约50个州政府及联邦资助的研究站点参与并为EcoTrends项目贡献数据，其中包含全部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（Agricultural Research Service, ARS）、美国农业部林业局、美国能源部、美国地质调查局（United States Geological Survey, USGS）及众多高校资助的研究站点。
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。
持续推进的数据汇编工作通过LTER溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）中的手动与自动处理流程完成更新。
本网络门户是约尔达盆地LTER与LTER网络办公室的合作成果。
本次提供的加利福尼亚洋流生态系统（California Current Ecosystem, CCE）数据集包含以平方千米为单位的县域面积测量值，并已按年度时间尺度进行聚合。