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采用实地调查取样与室内常规分析相结合的研究方法,对华家岭防护林带的土壤理化性质进行了测定和分析。结果表明:林分类型和林龄会影响土壤理化性质,表现为:云杉纯林土壤物理性质明显优于油松、杨树纯林;各林分土壤速效N、K,全量N、P、K及土壤有机质平均含量均为云杉纯林﹥杨树纯林﹥油松纯林,土壤速效P平均含量为云杉纯林﹥油松纯林﹥杨树纯林;随林龄的增加,云杉林的平均毛管孔隙度有所改善,土壤的通气性和透水性逐步提高,涵养水源能力有所增强。除速效P、全量K外,云杉林的各项土壤化学指标随林龄的增加均有不同程度的提高。
The physical and chemical properties of the shelterbelt in Huajialing were measured and analyzed by the combination of field survey sampling and routine laboratory analysis. The results showed that the type and age of forest affected the physical and chemical properties of soil. The results showed that the physical properties of pure soil of Picea crassifolia were significantly better than that of Pinus tabulaeformis and Poplar pure forest. The available N, K, total N, P and K The average contents of soil organic matter were pure spruce forest> poplar pure forest> pure Chinese pine forest, and the average content of available P in soil was pure spruce forest> pure Chinese pine tree> poplar pure forest. With the increasing of age, Porosity has improved, soil aeration and permeability gradually increased, water conservation capacity has been enhanced. In addition to available P, total K, the spruce forest soil chemical indicators with increasing age have varying degrees of improvement.