Soil Structure, Water and Solute Transport PDF Download

Author: Institut de recherche pour le développement (France).
Publisher:
ISBN:
Category :
Languages : en
Pages : 105

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Author: R. L. Peyton
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 76

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Author: Javier Alvarez-Benedi
Publisher: CRC Press
ISBN: 1420032089
Category : Technology & Engineering
Languages : en
Pages : 816

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The practitioner or researcher often faces complex alternatives when selecting a method to characterize properties governing a soil process. After years of research and development, environmental and agricultural professionals now have an array of methods for characterizing soil processes. Well-established methods, however, may not be suitable for

Author: Roth
Publisher: Birkhäuser
ISBN: 3034892640
Category : Science
Languages : en
Pages : 291

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Book Description
This book contains the proceedings of the first workshop held at Monte Verità near Ascona, Switzerland on September 24-29, 1989. The workshop was designed to survey the current understanding of water and solute transport through unsaturated soils under field conditions, and to foster research by discussing some unresolved key issues relative to transport modeling and experimentation in four "Think Tank" groups. The first part of this book consists of the reports prepared by the Think Tank groups, who discussed the following topics: modeling approaches, effective large scale properties, evaluation of filed properties, and the role preferential flow. The second part contains a selection of reviewed original contributions presented at the workshop, with topics ranging from the presentation of results from large scale experiments, to improved or new modeling approaches, and to legal or policy aspects. This book is intended for researchers in soil science, hydrology, and environmental engineering who have an interest in transport and reaction processes in the unsaturated zone. It will provide them with a representative sample of current research activities, and with a group discussion of future research directions in four important areas of water and solute transport.

Author:
Publisher:
ISBN:
Category : Agricultural pollution
Languages : en
Pages : 64

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Author: Lance Arthur Graham Aylmore
Publisher:
ISBN:
Category : Clay
Languages : en
Pages :

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Selected research publications submitted to the University of Adelaide for the degree of Doctor of Science.

Author: H. Magdi Selim
Publisher: CRC Press
ISBN: 9781575040493
Category : Technology & Engineering
Languages : en
Pages : 518

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Book Description
Physical Nonequilibrium in Soils provides cutting-edge knowledge on physical nonequilibrium phenomena in soils, offering unique insight into the complexity of our physical world. With 18 chapters comprising the book, topics cover soil properties fluid properties mechanistic models transfer function geostatistics fractal analysis cellular-automation fluids coupling of physical and chemical nonequilibrium models confirming and quantifying physical nonequilibrium in soils analytical solutions field-scale research environmental impacts.

Author: Rattan Lal
Publisher: CRC Press
ISBN: 9780824753245
Category : Technology & Engineering
Languages : en
Pages : 736

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Book Description
Principles of Soil Physics examines the impact of the physical, mechanical, and hydrological properties and processes of soil on agricultural production, the environment, and sustainable use of natural resources. The text incorporates valuable assessment methods, graphs, problem sets, and tables from recent studies performed around the globe and offers an abundance of tables, photographs, and easy-to-follow equations in every chapter. The book discusses the consequences of soil degradation, such as erosion, inhibited root development, and poor aeration. It begins by defining soil physics, soil mechanics, textural properties, and packing arrangements . The text continues to discuss the theoretical and practical aspects of soil structure and explain the significance and measurement of bulk density, porosity, and compaction. The authors proceed to clarify soil hydrology topics including hydrologic cycle, water movement, infiltration, modeling, soil evaporation, and solute transport processes. They address the impact of soil temperature on crop growth, soil aeration, and the processes that lead to the emission of greenhouse gases. The final chapters examine the physical properties of gravelly soils and water movement in frozen, saline, and water-repellant soils. Reader-friendly and up-to-date, Principles of Soil Physics provides unparalleled coverage of issues related to soil physics, structure, hydrology, aeration, temperature, and analysis and presents practical techniques for maintaining soil quality to ultimately preserve its sustainability.

Author: P. A. C. Raats
Publisher:
ISBN: 9789073270206
Category :
Languages : en
Pages : 138

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The distribution and dynamics of water, oxygen nitrate and respiratoryactivity in structures, unsaturated soil in relation with denitrifiction; Dynamics of partial anaerobiosis, denitrification, and water in oil, experiments and simulation; Description and modelling of soil structure formation by earthworms; On 3D-flow in macropore systems, from computed tomography imaging to lattice Boltzman simulations; Soil physical, chemical and biological processes in relation to the functing of plant roots and other soil biota; Field verification of advanced transport models for radionuclides in heterogeneous soils; Modelling regional transport of pesticide residues in grounwater; Behaviour of pesticides in topsoil and subsoin in relation to possible contamination of groundwater; Transport of water and solutes in wettable and waer repellent sandy soils; Solute transport in cracking clay soils; Pediction of soil hydraulic characteristics from basic soil properties.

Author: L. Brussaard
Publisher: Elsevier
ISBN: 148329028X
Category : Technology & Engineering
Languages : en
Pages : 846

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Book Description
Some pioneers in soil research such as Müller and Kubiëna were as much biologists as they were soil scientists and the legendary biologist Charles Darwin was foresighted in recognizing the earthworms as instrumental in reworking the soil, thereby forming what he called "vegetable mould". Still, soil science has largely been the realm of physicists and chemists over the past decades. Whatever the reason, this picture is rapidly changing. Until recently, research on the transport and transformation of elements in soil was often concerned with either soil biota/plant relationships or with soil structure/plant relationships, if the biota were considered at all, but very few studies explicitly took the interrelationships between soil structure and soil biota into account. The conference on Soil Structure/Soil Biota Interrelationships, held at Wageningen, The Netherlands, 24-28 November 1991, was meant to bridge that gap, focussing on methods of research, organized in three levels: features, processes and effects. The proceedings of the conference are testimony of the need to intertwine the biological, morphological, physical and chemical disciplines in soil research to understand better and forecast soil properties and processes as related to land use for agricultural and other purposes. This book should be of particular interest to soil scientists and ecologists who feel the need for a cross-disciplinary approach in soils research. It should also be a rich source of teaching material for courses in soil science and soil ecology at graduate level and above, with ample reference to studies on land use as related to agriculture and the environment.