摘要
在土壤系统分类研究中，干旱土纲是其重点的研究课题之一。干旱土纲的壤质与砂砾质土壤，由于面积大、分布广、土地利用方向不同，要求我们划分出来；土壤分类高级单元是制定土地规划、农业区划等方面的重要依据，砂砾质与壤质干旱土因在这些方面的应用不同要求在高级单元中区分开来；土壤剖面特性的不同和质地的差异为我们提供了区分的条件和依据。按照亚纲划分和各土类性质归并的原则，应以亚纲区分，这样干旱土纲划分为三个亚纲：高寒干旱土、半风化干旱土和壤质干旱土。
The loamy soil and gravel soil of aridisol order should be distinguished due to their large area,wide distribution and different direction of land utilization. The senior units of soil classification are important bases for the formulation of land planning and agricultural division. The differences of soil section features and soil texture provide conditions and bases for us to distinguish. The aridisol order could be divided into three suborders:alpine frigid aridisol,semi -weathering aridisol and loamy aridisol.
出处
《干旱区研究》
CSCD
北大核心
1995年第2期45-50,共6页
Arid Zone Research
关键词
干旱土
亚纲
划份
aridisol, suborder, division.
