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Soil Genesis and Classification
S. W. BuolFrancis Doan HoleR. J. McCracken
出版Iowa State University Press, 1973
主題Technology & Engineering / Agriculture / Agronomy / Soil ScienceTechnology & Engineering / Agriculture / Agronomy / General
ISBN081381460X9780813814605
URLhttp://books.google.com.hk/books?id=Cnwp2PriXNIC&hl=&source=gbs_api
註釋Morphology of soils; Soil micromorphology; Soil composition and characterization; Weathering and soil formation; Pedogenic processes: internal, soil-building processes; Soil environment: External factors of soil formation; Parent material: initial material of the solum; Relief and landscape factors of the soil and its environment; Contributions of climate to the total soil environment; Organisms: biological portion of the soil and its environment; Time as a factor of soil formation; Principles and historical development of soil classification; Modern soil classification systems; Entisols:recently formed soils: Vertisols: shrinking and swelling dark clay soils; In ceptisols: emleryonic soils with few diagnostic features; Aridisols: soils of arid regions; Mollisols: grassland soils of steppes and prairies; Spodosols: soils with subsoil, accumulations of sesquioxide and humus; Alfisols:high base status soils; Ultisols: low base status forest soils: Oxisols: sesquioxide - rihch, highly weathered soils of the intertropical regions; Histosols: organic soils.