摘要为了评价植被对土壤抗冲性的影响,以晋西黄土区蔡家川流域刺槐林、油松林、次生林、退耕荒草地、农地、土质路面为研究对象,采用野外实地放水冲刷法,以侵蚀量为指标,研究不同地类土壤的抗冲性,并分析地被物、根系与土壤抗冲性的相关性。结果表明:不同地类的土壤抗冲性为次生林>刺槐林>油松林>退耕荒草地>土质路面>农地;单位面积上枯落物量及其厚度对土壤抗冲性的影响最大;土壤表层根系对土壤抗冲性也具有较大影响,能够有效提高土壤抗冲性的根系结构是0～30 cm 土层中的毛根,其中,影响最大的是表层0～10 cm 的根系,单位体积土壤内的根系越多,土壤抗冲性越强。
Abstract：In order to evaluate the effect of vegetation on soil erosion resistance, the study was conducted in Caijiachuan watershed in western Shanxi Province. Using artificial eroding experiment in field, sediment yield of surface runoff was set as a measurement index to investigate the erosion resistance of different land uses in Loess Plateau area, including Robinia pseudoacacia forest stand, Pinus tabulaeformis forest stand, secondary forest stand, grassland, farmland and soil road. In this paper, the relationship between grass, litter, roots and soil erosion resistance was discussed. The soil erosion resistance of different land types was ranked in decreasing
2012, Vol. 10 
