【摘要】 根据野外调查资料和典型土壤剖面理化性质 ,包括室内化验数据综合分析表明 :秦岭北坡土壤的主要发生特性随海拔高度呈有规律的变化 ,依照《中国土壤系统分类 (修订方案 )》检索 ,土壤垂直带谱结构为 :土垫旱耕人为土—简育干润淋溶土—简育湿润淋溶土—酸性湿润雏形土—暗沃寒冻雏形土—暗瘠寒冻雏形土更多还原

【Abstract】 Comprehensive analysis of out-door investigation findings and indoor test data of physical and chemical properties showed that the main properties of the soils on the northern slope of the Qinling Mountain change regularly with the increasing altitude:argillification is getting weaker and weaker,and clay reducing significantly. There are obvious argillic horizons in the middle-low zone on the slope,and no type B horizon in the middle-high zone soil pH value and base saturation decrease from the Wei river valley to the top of the Taibai mountain. It features strong leaching,low Fed,high iron activational degree,low enrichment of aluminium and iron. Soil weathering and development remains in the stage of siallitization. According to the Chinese Soil Taxonomy (Revised Proposal),the soil composition spectrum of the Vertical zones consists of Eum-Orthic Anthrosols (<750meter)\_Hap-Ustic Luvisols (750meter～1400meter)\_Hap-Udic Luvisols(1400meter～2500meter)-Acid-Udic Cambisols(2500meter～3300meter)-Mol-Cryic cambisols (3300meter～3500meter)-Umb-Cryic Cambisols (>3500meter). \;更多还原