大巴山北坡土壤特性及其垂直分布

Characteristics and Vertical Distribution Regularities of Soil in North Slope of Dabashan Mountains in South Shaanxi

应用土壤发生学分类体系对大巴山北坡不同海拔高度土壤进行研究，结果表明，发育于不同海拔高度的土壤剖面形态、土壤特性和成土过程存在着明显差异。随海拔高度的变化，土壤性质表现出明显的地理分异。大巴山北坡基带土壤为黄褐土（＜９００ｍ），自下而上依次分布着黄棕壤（９００～１６００ｍ）、棕壤（１６００～２６００ｍ）、暗棕壤（＞２６００ｍ）。此外。

By means of genetic classification,the soils at different altitudes on the north slope of Dabashan Mountains have been studied.The soils developed in different altitudes are significantly different in profile morphologies,pedogenic processes and soil characteristics.With the change of vertical zonality of soil types,their properties are also evident in the regularities of geographic differentiation.And the soil vertical distribution is in the order of yellowcinnanon soil (<900 m),yellow brown soil ( 900～1 600 m ),brown soils (1600～2600) and dark brown soil (>2 600 m).Besides,brown rendzina and subalpine meadow soil in this region is also scattered.