It's very important to analyze and evaluate quantitatively the characteristics of different aspect of soil erosion in wind-water
erosion crisscross region for the prevention and treatment of soil erosion in this area. The( ()~(137) Cs) content in soil profiles of different aspects in a typical Mao in Liudaogou catchment in
wind-water erosion crisscross region were analyzed, showing that the difference of soil erosion in different aspect is significant and the soil erosion rate is in this order: north slope>east slope>south slope>west slope. Compared with other areas, the difference of erosion rate between north slope and south slope is on the contrary because of the special erosion force——wind-water erosion crisscross. Also, the percentage of wind erosion was estimated to be at least larger than 18%. The erosion rates in different
slope position in all aspects were also different, the heaviest erosion occurred in the lower position, and the upper position and the middle position were slighter than the lower position. Generally, the changeable tendency of annual erosion rate in sloping surface is in fluctuation with the increasing slope length downslope. Also, the measures of soil and water conservation in sloping surface played important role in reducing soil erosion.