The Pedogenetic Characteristics And Soil Taxonomic Classification Of Typical Soil In The Northern Hebei Province

The soil is an important resource of human production and life. Soil classification is the basis of the development of agriculture and animal husbandry and scientific research, moreover is the evolving needs of society. In this study, through field investigation and laboratory analysis for some typic soil of Northern Hebei Province, the basic theories and methods of Chinese Soil Genetic Classification (CSGC) and the Chinese Soil Taxonomy(CST) were used, pedogenesis characteristics of the soils, including soil physical, chemical and mineralogical properties, were investigated and the soil taxomony was determined based on the Chinese Soil Taxonomy. The main results are shown as following:(1)31typical soil profiles of Northern Hebei were divided into7Soil Orders including Semi-Luvisols, Cinnamon Soil and other19Soil Types by the "Chinese Soil Genetic Classification(1992)", and7Suborders of Primosols, Cambisols, Argosols, Isohumosols Halosols,12Groups of Orthic Primosols and so on,15Subgroups of Usti-Orthic Primosols, Lithic Usti-Orthic Primosols and so on By the "Keys to Chinese Soil Taxonomy (3rd edition)".(2)The main Diagnostic Horizons in Northern Hebei are Mollic Epipedon, Ochric Epipedons, Cambic horizon, Argic horizon, Salic horizon. The main Diagnostic Features are Base saturation, Isohumic property, Redox features, Lithic contactand and Calcic evidence.(3) The corresponding relationship between CSGC Group and CST Order could be found from parts of soils in Northern Hebei and the corresponding relationship between the CSGC Group and CST Group could not be found.(4)12Soil Familys, including the Skeleton Loamy Feldspar-mixed non-dystric warm Lithic Usti-Orthic Primosols and so on, and12Series including Pingdinaobao were established initially.