Genesis properties and taxonomic classification in different types of topography and under different degrees of vegetation coverage are studied through the investigation of a 2 500 hm² unused land and the analysis of soil samples at different depths in the Bandengtan resettlement area of Dingbian County,Shaanxi Province.In the study area,soil genesis layers are not complete,and profile differences in soil color,soil structure,and soil nutrients are not distinct.Soil organic matter content is rather low,with a maximum content of 1.787 1 g/kg and a minimum content of 0.201 7 g/kg.There are no distinct eluviation and deposition of soil calcium carbonate and no distinct deposition layer in the profile.Sand(2~0.02 mm) is the main particle composition.The CEC concentrates at 2.5~5 cmol/kg,indicating a poor soil fertility.From the diagnostic horizons and their characteristics analysis,soils in the area belongs to 1 soil order,1 suborder,2 groups,and 4 subgroups,in which Ⅱ₁ belongs to Parasalic Aqui-Sandic Primosols;Ⅱ₅,Sodic Aqui-Sandic Primosols;Ⅲ₄,Calcaric Aqui-Sandic Primosols;and Ⅵ₄,Calcaric Usti-Sandic Primosols.The results can be used as a reference to comprehensive soil resources evaluation,soil suitability evaluation,and the rational layout of agriculture,forestry, and animal husbandry.