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石灰岩山地植被稀少,裸岩较多,土层瘠薄,土壤含水量低,水土流失严重,造林绿化极为困难。所以,选择相应的最佳造林方式和树种及一整套符合其特点的造林技术措施,是石灰岩山地造林绿化的关键。一、树种选择在沟谷坡脚水土条件较好的立地条件下,营造以毛白杨、刺槐为主的混交林,同时注意发展柿子、红枣、核桃等经济林树种。在阳坡和半阳坡水土条件中等的立地条件下,以侧柏、臭椿为主,适当发展柿子、花椒、核桃等经
Limestone mountainous vegetation scarce, more bare rock, soil is infertile, soil moisture is low, serious soil erosion, afforestation is extremely difficult. Therefore, the selection of the best afforestation and tree species and a set of afforestation techniques that conform to their characteristics are the keys to afforestation in limestone mountains. First, the choice of tree species in the gully slope soil and water conditions better site conditions, to create poplar, black locust dominated mixed forest, and pay attention to the development of persimmon, red dates, walnut and other economic forest tree species. Under the condition of moderate soil and water conditions in the sunny slope and the semi-sunny slope, mainly oriental arborvitae and Ailanthus altissima, proper development of persimmon, pepper and walnut