The soil characteristics of types, distribution, physical-chemical status and nutrient and their changes in the conditions of salinization, desertification and cultivation are analyzed in this paper.

• 分析了干旱区主要土壤类型、分布规律，土壤的理化性状、养分特征以及在盐碱化、沙化和灌耕条件下的变化，并论证了干旱区土壤资源的基本特征对区域可持续发展的影响。