February- March 2010 RTK survey of salt marsh plant ground elevations, plant characteristics and soil properties to support analysis of a LIDAR-derived DEM.

Real time kinematic (RTK) GPS survey of ground elevations for six plant species (Spartina alterniflora, Juncus roemerianus, Batis maritima, Distichlis spicata, Salicornia virginica and Borrichia frutescens) and two non-vegetated cover classes (salt pan and intertidal mud) was carried out from February to March 2010 to assess the accuracy of a LIDAR-derived digital elevation model. In total, 369 ground control points (GCP) were collected for the Duplin River (Sapelo Island) and Blackbeard Creek (Blackbeard Island) salt marshes with associated plant and soil charactistics (soil salinity and water content, soil organic matter, soil redox potential). Data were collected to examine the relationships between marsh soil elevation, plant habitat distribution and soil properties and to support the analysis of a a LIDAR-derived digital elevation model (DEM) and RTK data collect in 2009.

2010年2月至3月，针对6种植物（Spartina alterniflora、Juncus roemerianus、Batis maritima、Distichlis spicata、Salicornia virginica及Borrichia frutescens）与2类无植被覆盖类型（盐滩（salt pan）、潮间带泥滩（intertidal mud））的地面高程，开展了实时动态（Real Time Kinematic, RTK）GPS测量，以评估激光雷达（LIDAR）生成的数字高程模型的精度。本次测量共为杜普林河（萨佩洛岛）与黑胡子溪（黑胡子岛）的盐沼收集了369个地面控制点（Ground Control Point, GCP），并同步采集了相关植物与土壤特征数据，包括土壤盐度、含水量、土壤有机质及土壤氧化还原电位。本数据集的采集旨在探究沼泽土壤高程、植物生境分布与土壤性质之间的关联，并支撑对2009年采集的激光雷达数字高程模型（Digital Elevation Model, DEM）及RTK数据的分析。