Soil salinity and organic content at GCE-LTER vegetation monitoring plots in October 2009

Soil samples were collected in conjunction with Fall 2009 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.

本数据集的土壤样本采集工作与2009年秋季植被监测同步开展，采集点位为10个GCE研究站点河岸带与中潮沼带内的半数永久性植被监测样地。孔隙水盐度（Pore-water salinity）的测定方法为：将经定量去离子水润湿后的干燥土壤样本的上清液盐度进行分析，以此得到孔隙水盐度数值。土壤有机含量通过重量分析法测定，具体为对比土壤样本的无灰干重与总重量，进而计算得到有机含量。