Soil surface ESP DSM data of the Fitzroy catchment WA, Darwin catchments and Mitchell catchment Qld generated by the Northern Australia Water Resource Assessment

Soil surface ESP (exchangeable sodium percentage) is one of 18 attributes of soils chosen to underpin the land suitability assessment of the Northern Australia Water Resource Assessment (NAWRA) through the digital soil mapping process (DSM). Soil surface ESP indicates chemical properties of a soil that influence soil structure stability (potential for erosion) and water infiltration. This soil surface ESP raster data represents modelled data of ESP of the soil surface (

土壤表层交换性钠百分比（exchangeable sodium percentage, ESP）是为支撑澳大利亚北部水资源评估（Northern Australia Water Resource Assessment, NAWRA）的土地适宜性评价工作，通过数字土壤制图流程（digital soil mapping, DSM）所选定的18项土壤属性之一。土壤表层ESP可表征影响土壤结构稳定性（潜在侵蚀风险）与水分入渗能力的土壤化学属性。该土壤表层ESP栅格数据为土壤表层ESP的建模数据（