Forest soils : properties and processes / / K. A. Armson

• Record Nr.: UNINA9910812462903321
• Autore: Armson K. A.
• Pubbl/distr/stampa: Toronto, [Ontario] ; ; Buffalo, [New York] : , : University of Toronto Press, , 1977; ©1977
• ISBN: 1-4426-5633-6
• Descrizione fisica: 1 online resource (407 p.)
• Collana: Heritage
• Disciplina: 634.9
• Soggetti: Forest soils; Electronic books.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Cover -- Contents -- Preface -- Introduction -- 1 Forest soil: what it is and how to describe it -- A look at soil -- The description of a soil -- 2 The architecture of soil: texture, structure, and porosity -- Soil texture -- Determination of soil texture -- Stones -- Soil structure -- Origin of soil structure -- Soil consistence -- Soil porosity -- Measurement of soil porosity -- 3 Colour, temperature, and aeration -- Soil colour -- Measurement of soil colour -- Soil temperature -- Soil temperature regimes -- Snow and frost -- Soil aeration -- Measurement of soil aeration -- Soil aeration regimes -- 4 Soil water: the lifeblood of soil -- Energy relationships of water -- Movement of water in soil -- Movement in layered soils -- Soil water measurement -- Soil moisture regimes -- 5 Soil organic matter -- The type and amount of organic matter -- The form and composition of litter -- Energy transformations and decomposition of litter -- The forest floor -- 6 Soil biology: organisms and processes -- Soil fauna -- The measurement of soil animals -- Kinds of animals -- Soil microflora -- The estimation of microflora populations and their activities -- Bacteria -- Actinomycetes -- Fungi -- Algae -- The rhizospere -- 7 Soil chemistry -- Weathering of soil materials -- Physical -- Chemical -- Clay minerals -- products of weathering -- Cation exchange capacity -- Measurement of cation exchange capacity -- Anion exchange -- Soil reaction -- pH -- Measurement of soil reaction -- Soil elements -- Carbon -- Nitrogen ; -- Phosphorus -- Potassium -- Calcium and magnesium -- Sulphur -- Iron and aluminium -- Manganese -- Trace elements -- Oxidation-reduction -- 8 Soil fertility -- Essential elements -- Measurement of soil fertility -- Elements in plants -- Elements in the soil -- Plant growth -- Plant-soil relationships -- Diagnostic and predictive techniques.; Visual symptoms -- Comparative chemical analyses -- Mathematical relationships -- General fertility considerations -- Fertilizer materials and their use -- 9 Soil classification -- History -- Units of soil and classification -- The 7th approximation and soil taxonomy -- a world system -- The basis -- Diagnostic horizons -- Categories -- The Canadian soil classification system -- Categories -- Family and series -- 10 Soil surveys -- Soil surveys and the landscape -- Examples of soil surveys -- Comprehensive land surveys -- General soil survey -- USDA -- General soil survey -- Canada -- Forest soil survey -- Japan -- Boreal forest soil survey -- The Netherlands -- a large-scale survey -- Interpretation and use of soil surveys -- 11 Roots and soil -- Form and abundance of roots -- Methods of study -- Forms of roots -- Rooting volume of the soil -- Amounts and development of roots -- Root growth and soil properties -- Ecological and silvicultural aspects of roots -- 12 Fire and soil -- Effects of fire on forest soil properties -- Physical properties -- Chemical properties -- Soil organisms -- Ecological effects -- 13 The hydrolic cycle -- The water cycle -- General considerations -- Measurements -- Effects of soil properties -- Effects of vegetation -- Forest management effects -- 14 Nutrient cycling -- General considerations -- Nutrient inputs and outputs -- Atmospheric -- Geologic -- Biologic -- Internal cycling in the forest and soil -- The forest -- The soil -- Nutrient cycling in relation to certain ecological and silvicultural considerations -- 15 Forest soil development -- Factors of soil development -- Processes of soil development -- Additions -- Losses -- Translocation -- Transformation -- Conclusions -- 16 Soils and changing landscapes and use -- Soils and landscapes -- Geologic -- Vegetation -- Cultural -- The New Forest -- a case history.; Location, area, and geology -- Settlement, culture, vegetation, and soils -- L'envoi -- Appendix 1 Procedures for soil profile description and sampling -- Soil profile description -- Soil sampling procedures -- Methods of sampling -- Numbers of samples -- Appendix 2 Common and scientific names of trees and shrubs -- References -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- K -- L -- M -- N -- O -- P -- R -- S -- T -- U -- V -- W -- Y.
• Sommario/riassunto: This is a comprehensive study of forest soils for foresters, wildlife and park managers, ecologists, and others interested in forest soils. It provides a valuable text for introductory and more advanced courses.