Cedar Creek Ecosystem Science Reserve site, station Anoka County, MN (FIPS 27003), study of percent urban population in units of percent 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 percent urban population measurements in percent units
and were aggregated to a yearly timescale.

EcoTrends项目由黛布拉·彼得斯博士（Jornada Basin长期生态研究站，美国农业部农业研究服务局Jornada试验牧场）与阿里尔·卢戈博士（Luquillo长期生态研究站，美国农业部林业局Luquillo试验林）于2004年发起，旨在支持长期生态数据集的收集与分析工作。本项目是一项大型综合研究计划，核心致力于提升长期生态数据的可访问性与利用程度。目前，已有约50个州级及联邦资助的研究站点参与并助力EcoTrends项目，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（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）资助的站点，另有众多高校站点加入。EcoTrends项目的数据集可通过探索性网络门户（http://www.ecotrends.info）获取，该门户依托交互式Web应用程序，为用户提供持续的数据汇编与数据获取服务。作为长期生态研究溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，持续推进的数据汇编工作通过手动与自动结合的处理方式进行更新。本网络门户由Jornada LTER与LTER网络办公室合作开发。下述来自塞达克里克生态科学保护区（Cedar Creek Ecosystem Science Reserve, CDR）的数据集，包含以百分比为单位的城市人口占比数据，且已按年度时间尺度完成聚合。