SGS-LTER CO2 Elevation Study: Stipa comata basal size and plant density per Open Top Chamber plot on the Central Plains Experimental Range, Nunn, Colorado, USA 1997 - 2001

This data package was produced by researchers working on the Shortgrass Steppe
Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State University.
Long-term datasets and background information (proposals, reports, photographs, etc.) on the
SGS-LTER project are contained in a comprehensive project collection within the Digital
Collections of Colorado (http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429).
The data table and associated metadata document, which is
generated in Ecological Metadata Language, may be available through other repositories
serving the ecological research community and represent components of the larger SGS-LTER
project collection. Additional information and referenced materials can be found: http://hdl.handle.net/10217/82454. At the end of the Open Top Chamber experiment the number and basal size of Stipa comata plants in ambient and elevated (720ppm) chambered and unchambered plots was measured. There was a greater number of small plants and seedlings in the elevated CO2 plots. This research was conducted at the Central Plains Experimental Range, near Nunn, CO; lat.40degrees 40 minutes N; long. 104 degrees 45 minutes W in the shortgrass steppe region of NE Colorado, USA and as a collaboration between SGS-LTER and USDA-ARS researchers.

本数据包由参与短草草原长期生态研究（Shortgrass Steppe Long Term Ecological Research, SGS-LTER）项目的研究人员编制，该项目由科罗拉多州立大学负责管理。有关SGS-LTER项目的长期数据集与背景资料（包括项目建议书、研究报告、影像资料等），均收录于科罗拉多数字馆藏（Digital Collections of Colorado）的综合项目馆藏中，访问链接为http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429。本数据集包含的数据表与配套的生态元数据语言（Ecological Metadata Language, EML）格式元数据文档，可通过服务于生态研究共同体的其他仓储平台获取，且属于SGS-LTER综合项目馆藏的组成部分。更多相关信息与参考资料可通过以下链接查阅：http://hdl.handle.net/10217/82454。本研究为开顶箱（Open Top Chamber, OTC）实验，实验中对环境大气与720ppm高CO₂浓度条件下，有箱与无箱样地内的细针茅（Stipa comata）植株数量与基径大小进行了测量。结果显示，高CO₂浓度样地内小型植株与幼苗的数量更多。本研究在美国科罗拉多州东北部的短草草原区域开展，具体位于科罗拉多州纳恩附近的中央平原实验牧场，地理坐标为北纬40°40′、西经104°45′，由SGS-LTER与美国农业部农业研究服务局（USDA-ARS）研究人员合作完成。