Soil aggregate size distribution and particulate organic matter content from Arctic LTER moist acidic tundra nutrient addition plots, Toolik Field Station, Alaska, sampled July 2011.

Soil aggregate size distribution, aggregate carbon and nitrogen, and light fraction carbon were determined for mineral soils in moist acidic tundra. Soil was sampled in control, and N+P plots of the Arctic LTER Moist Acidic Tundra plots established in 1989 and 2006.

针对湿润酸性苔原中的矿质土壤，测定了其土壤团聚体粒径分布（soil aggregate size distribution）、团聚体碳氮含量以及轻组分碳（light fraction carbon）含量。土壤样品采集自1989年与2006年设立的北极长期生态研究站点（Arctic Long Term Ecological Research, LTER）湿润酸性苔原样地的对照样地与氮磷添加（N+P）样地。