Soil salinity and organic content at GCE-LTER vegetation monitoring plots in October 2011

Soil samples were collected in conjunction with Fall 2011 plant monitoring at half of the permanent vegetation monitoring plots in the creekbank and midmarsh zones at 10 GCE study sites. Pore-water salinity was determined by analysis of supernatant salinity in dried soil samples hydrated with a measured volume of deionized water. Organic content was measured gravimetrically by comparing ash-free dry weight and total weight of soil samples.

土壤样品采集于2011年秋季植物监测工作期间，取自10个GCE研究样地内溪岸带与中潮沼带的半数永久性植被监测样方。孔隙水盐度（pore-water salinity）的测定方式为：将经定量体积去离子水（deionized water）水化后的风干土壤样品的上清液盐度（supernatant salinity）进行分析，以此得到孔隙水盐度。土壤有机含量采用重量法测定，通过对比土壤样品的无灰干重与总重量完成计算。