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以放牧荒草坡地为对照，对太行山区片麻岩山地不同植被的水土保持效益进行了观测研究表明，在太行山片麻岩山地三种常见植被（ 刺槐林、臭椿林和荆条灌丛） 中，以刺槐林植被在涵养水源、保持水土、改善土壤结构等方面的作用最明显，其次为臭椿林植被。林下枯枝落叶层对于森林保持水土起着不可替代的作用。
Taking the grazing grassland slopes as a control, we observed the benefits of soil and water conservation of the different vegetation types in the gneissic mountainous area in the Taihang Mountains. The results showed that in the three common vegetation types of the gneissic mountainous areas in the Taihang Mountains (Robinia pseudoacacia, Ailanthus altissima forest and Vitex negundo) The Robinia pseudoacacia forest vegetation plays the most obvious role in water conservation, soil and water conservation, and soil structure improvement, followed by Ailanthus altissima forest vegetation. Undergrowth litter layer plays an irreplaceable role for the forest to maintain soil and water.