The study was conducted for different grazing systems in the ecotone of grassland and farmland in Ningxia sandy lands.Results indicated that soil moist ure was higher in the 6th rotational grazing area and lower under the conditions of continuous grazing and enclosing.The varieties of it with seasons and rainfall amount under different grazing systems had the same trends.Soil bulk densities under enclosing and u nder 6

4

and 2 areas rotational grazing were 6%

7.77%

1.96%

and 1.43% lower than that of continuous graz- ing

respectively

and soil porosities

7.38%

4.67%

3.79%

and 4.72%

respectively.The contents of soil organic matter

total nit rogen

total phosphorus

and total potassium presented their maximums under free grazing

but the differences among the grazing systems tested were not notable.It was also showed t hat soil rapidly available potassium u nder the 6 areas rotational grazing was higher

and under continuous grazing was lower than the others.