Georgia Salt Marsh: Soil Organic Carbon, Nitrogen, Bulk Density, Moisture, and Texture

As part of project predicting soil carbon at depth from that found at the surface using remote sensing, 28 soil cores were taken from six salt marshes along the Georgia coastline. Cores were taken as deep as possible (25 – 165 cm) and sectioned into 5 cm depths. Soils were analyzed for organic carbon (SOC), total nitrogen (N), bulk density (BD), and particle size (by horizon). Stable carbon isotopes were obtained in three marshes on Sapelo Island; a subset was also analyzed for radiocarbon.

本项目旨在借助遥感技术，基于表层土壤碳数据反演深层土壤碳含量。在此背景下，研究团队从美国佐治亚州海岸线沿线的6处盐沼中采集了28个土壤岩芯。岩芯采集至最大可行深度（25~165厘米），并按5厘米厚度进行分层。对各分层土壤样品，测定了有机碳（SOC）、全氮（N）、容重（BD）及按土层分析的粒度组成。针对萨佩洛岛的3处盐沼，还额外测定了其土壤的稳定碳同位素组成；同时选取部分子样品开展了放射性碳分析。