水土保持通报2012，Vol.32Issue(1)：26-32,7.
定边县板凳滩移民区土壤发生特性与系统分类研究
Soil Characteristics and Taxonomic Classification in Bandengtan Resettlement Area of Dingbian County,Shaanxi Province
摘要
Abstract
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.关键词
土壤发生特性/系统分类/新成土Key words
soil genesis property/taxonomic classification/Primosols分类
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杨晓武,李新平..定边县板凳滩移民区土壤发生特性与系统分类研究[J].水土保持通报,2012,32(1):26-32,7.基金项目
陕西省国土资源规划与评审中心项目“定边县板凳滩移民搬迁区农用地土壤调查” （）
