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

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.开顶式气室（Open Top Chamber）实验结束后，研究人员测定了环境CO₂浓度气室组、升高CO₂浓度（720ppm）气室组的处理样地与非气室对照样地中钝针茅（Stipa comata）的株数及基径。升高CO₂浓度样地内的小型植株与幼苗数量更多。本研究开展于美国科罗拉多州东北部短草草原区域的中央平原实验牧场（Central Plains Experimental Range），点位位于科罗拉多州纳恩附近，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。