Abstract:

Abstract: We studies and comparative analysis of different field use types of soil erodibility about its surface roughness(Z0), wind erosion quantity and its correlation and correlation with surface fixtures on no-tillage field, the traditional tillage field, winter wheat field, the returning farmland to grassland (alfalfa) and shrub field (Caragana Fabr.) in this article. Observation we can see the traditional tillage field wind erosion is the most seriously, soil erodibility least, is a major source of local dust storm. Shrub field and the returning farmland to grassland surface roughness(Z0) are high than traditional tillage field 3.61 and 2.91 times. No-tillage, returning farmland to grassland, shrub field can be effective in reduces wind erosion, soil erodibility capacity increases significantly. The mainly field erosion of conventional tillage fields, winter wheat are concentrate in the near-surface, it is belongs near-surface sand. Improvement “weeds-frequency degree” that is, vegetation coverage, the effective prevention and treatment in arid area can increase soil erodibility obvious. its belong power correlation between observation height and its sand erosion quantity in no-till field, others fields are polynomial relations.