Physicochemical Properties and Surface Charge Characteristics of Arid Soils in Southeastern Iran

Table 1

General information on the studied pedons.

Pedon	Soil classification	Relief	Physiography	Land use	Parent material	Drainage
1	Fine loamy, mixed (calcareous), hyperthermic, Calcic Haplosalids	Flat	Piedmont alluvial plain	Saline pasture	Calcareous alluvium	Imperfectly drained
2	Coarse loamy, mixed (calcareous), hyperthermic, Aridic Ustorthents	Almost flat	River alluvial plain	Bare	Calcareous alluvium	Well drained
3	Fine loamy, mixed (calcareous), hyperthermic, Aridic Ustifluvents	Almost flat	Piedmont alluvial plain	Plowed	Calcareous alluvium	Moderately well drained
4	Loamy skeletal, mixed (calcareous), hyperthermic, Aridic Ustifluvents	Almost flat	Piedmont alluvial plain	Harvested wheat	Calcareous alluvium	Well drained
5	Sandy skeletal, mixed (calcareous), hyperthermic, Aridic Ustifluvents	Almost steep	Alluvial-colluvial fan	pasture	Calcareous alluvium	Well drained
6	Coarse loamy, mixed (calcareous), hyperthermic, Aridic Ustorthents	Flat	River alluvial plain	Plowed	Calcareous alluvium	Moderately well drained
7	Fine loamy, mixed (calcareous), hyperthermic, Aridic Ustifluvents	Almost flat	Piedmont alluvial plain	Plowed	Calcareous alluvium	Well drained
8	Sandy skeletal, mixed (calcareous), hyperthermic, Aridic Ustorthents	Almost steep	Alluvial-colluvial fan	Pasture	Calcareous alluvium	Well drained