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以纸坊沟流域为研究对象,研究了植被恢复后不同植被对土壤水分的影响情况,得出如下结论:①草地土壤水分含量大于灌木林地,灌木林地土壤水分含量大于乔木林地;②选用乡土树种油松造林对土壤的干化程度较轻,选用刺槐造林时要考虑立地条件和造林密度,林草隔带种植可以减轻土壤干化程度;③灌木林下阴坡土壤干层并不比阳坡干层程度轻。土壤干化程度和植被种类直接相关。此外,受种植密度及人为干扰影响;④和以前人们的认识不同,天然草本植被也会形成土壤干层,其中白羊草和长芒草形成有利于自身群落稳定的干层,但茭蒿形成的干层则对自身稳定不利,在植被建设上应引起足够重视。
Taking the Zhifanggou watershed as an example, the effects of different vegetation on soil moisture after vegetation restoration were studied. The conclusions are as follows: ① The soil water content of grassland is larger than that of shrubbery, and the soil water content of shrub land is larger than that of arbor; ② Native species The degree of dryness of the soil is less due to the afforestation of Pinus tabulaeformis, the site conditions and afforestation density should be considered when afforestation with Robinia pseudoacacia. The planting of forest and grass can reduce the degree of soil desiccation; Level of light. The degree of soil drying is directly related to the type of vegetation. In addition, affected by planting density and human disturbance; ④ Unlike previous people’s understanding, natural herbaceous plants also form dry soil layers, of which, A. gramineus and M. przewalskii form a dry layer that is conducive to the stability of their own communities. However, Dry layer on the stability of their own unfavorable, in vegetation construction should cause enough attention.