论文部分内容阅读
本文通过野外实地放水试验的方法，研究了同一坡度、不同土地利用形式以及同一土地利用形式、不同坡度下的土壤抗冲性。结果表明，由于植被情况和水稳性团粒含量的不同，土壤抗冲性有较大的差别。本试验中土壤抗冲性的排列顺序为封育荒草坡＞洋槐林中杂草地＞柠条林地＞沙棘林地＞沙打旺人工草地＞谷子农地＞裸露休闲地，与裸露休闲地相比，土壤抗冲性封育荒草坡地提高９４％，洋槐林中杂草地提高８４．３％，柠条林地提高７２．１％，沙棘林地提高６８．７％，沙打旺人工草地提高５３．４％，谷子农地提高２８．３％；土壤抗冲性随地面坡度的增加呈指数函数递减趋势。
In this paper, through the field water release test, the soil erosion resistance under the same gradient, different land use forms and the same land use forms and different slopes were studied. The results show that the soil anti-scourability is quite different due to the difference of vegetation and water-stable aggregates. In this experiment, the order of soil anti-scouring was to seal up the weeds and scallops> weeds in acacia forest> caragana forest land> seabuckthorn forest> artificial grassland> millet land> naked leisure land , The soil anti-scouring efficiency increased by 94% and the weed in the acacia forest increased by 84.3%, 72.1% in the Caragana korshinskii forest, 68.7% in the seabuckthorn forest and 53% in the Artemisia tabaci. 4%, and the increase of millet farmland by 28.3%. Soil anti-scalability decreased exponentially with the increase of ground slope.