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本文从林冠层截留量、地被物层持水能力、土壤层水文性质和土壤入渗性能几方面研究了石灰岩和片麻岩山地上不同树种４年生水土保持林涵养水源的作用。在试验基础上提出不同母岩石质山地适宜的水土保持树种：石灰岩山地适宜树种为刺槐、栾树、君迁子、臭椿、香椿；片麻岩山地适宜树种为刺槐、五角枫、臭椿、车梁木、山槐。
In this paper, the function of water conservation of four-year-old soil and water conservation forest of four tree species in limestone and gneiss fields was studied from the aspects of canopy interception, water-holding capacity of soil cover, hydrological properties of soil layer and soil infiltration performance. On the basis of the experiment, the suitable soil and water conservation tree species of rocky mountainous areas with different mother rocks were put forward: the suitable tree species for limestone mountainous area are Robinia pseudoacacia, Luan tree, Junligang, Ailanthus altissima, Toona sinensis; Mountain Huai.