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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309042690
Category : Technology & Engineering
Languages : en
Pages : 186
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Book Description
For developing nations, soil erosion is among the most chronic environmental and economic burdens. Vast amounts of topsoil are washed or blown away from arable land only to accumulate in rivers, reservoirs, harbors, and estuaries, thereby creating a double disaster: a vital resource disappears from where it is desperately needed and is deposited where it is equally unwanted. Despite much rhetoric and effort, little has been done to overcome this problem. Vetiver, a little-known tropical grass, offers one practical and inexpensive way to control erosion on a huge scale in both humid and semi-arid regions. Hedges of this deeply rooted species catch and hold back sediments while the stiff foliage acts as a filter that also slows runoff and keeps moisture on site. This book assesses vetiver's promise and limitations and identifies places where this grass can be deployed without undue environmental risk.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309042690
Category : Technology & Engineering
Languages : en
Pages : 186
Get Book Here
Book Description
For developing nations, soil erosion is among the most chronic environmental and economic burdens. Vast amounts of topsoil are washed or blown away from arable land only to accumulate in rivers, reservoirs, harbors, and estuaries, thereby creating a double disaster: a vital resource disappears from where it is desperately needed and is deposited where it is equally unwanted. Despite much rhetoric and effort, little has been done to overcome this problem. Vetiver, a little-known tropical grass, offers one practical and inexpensive way to control erosion on a huge scale in both humid and semi-arid regions. Hedges of this deeply rooted species catch and hold back sediments while the stiff foliage acts as a filter that also slows runoff and keeps moisture on site. This book assesses vetiver's promise and limitations and identifies places where this grass can be deployed without undue environmental risk.
Author: John C. Greenfield
Publisher: World Bank Publications
ISBN: 9780821314050
Category : Business & Economics
Languages : en
Pages : 86
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Book Description
This handbook has been prepared to support fieldworkers and farmers in developing vegetative systems of soil and mositure conservation that will meet the requirements of small farmers in developing countries, most of whom reside in the tropics and semitropics. Experience has shown that conventional systems of earth bunds or terraces on small farms are expensive and in many cases, especially in modern times, ineffective. When applied correctly, vegetative systems of soil and mositure conservation - particulary the system of hedges of vetiver grass described in this handbook - have proved cheaper and more effective.
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Category : Dairy farming
Languages : en
Pages : 24
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Book Description
Author: Delwyn G. Fredlund
Publisher: John Wiley & Sons
ISBN: 1118280504
Category : Technology & Engineering
Languages : en
Pages : 946
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Book Description
The definitive guide to unsaturated soil— from the world's experts on the subject This book builds upon and substantially updates Fredlund and Rahardjo's publication, Soil Mechanics for Unsaturated Soils, the current standard in the field of unsaturated soils. It provides readers with more thorough coverage of the state of the art of unsaturated soil behavior and better reflects the manner in which practical unsaturated soil engineering problems are solved. Retaining the fundamental physics of unsaturated soil behavior presented in the earlier book, this new publication places greater emphasis on the importance of the "soil-water characteristic curve" in solving practical engineering problems, as well as the quantification of thermal and moisture boundary conditions based on the use of weather data. Topics covered include: Theory to Practice of Unsaturated Soil Mechanics Nature and Phase Properties of Unsaturated Soil State Variables for Unsaturated Soils Measurement and Estimation of State Variables Soil-Water Characteristic Curves for Unsaturated Soils Ground Surface Moisture Flux Boundary Conditions Theory of Water Flow through Unsaturated Soils Solving Saturated/Unsaturated Water Flow Problems Air Flow through Unsaturated Soils Heat Flow Analysis for Unsaturated Soils Shear Strength of Unsaturated Soils Shear Strength Applications in Plastic and Limit Equilibrium Stress-Deformation Analysis for Unsaturated Soils Solving Stress-Deformation Problems with Unsaturated Soils Compressibility and Pore Pressure Parameters Consolidation and Swelling Processes in Unsaturated Soils Unsaturated Soil Mechanics in Engineering Practice is essential reading for geotechnical engineers, civil engineers, and undergraduate- and graduate-level civil engineering students with a focus on soil mechanics.
Author: Donald H. Gray
Publisher: John Wiley & Sons
ISBN: 9780471049784
Category : Technology & Engineering
Languages : en
Pages : 402
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Book Description
The first comprehensive, practical guide to the selection,construction, and installation of soil bioengineering andbiotechnical slope protection Here is the ultimate guide to physically attractive,environmentally compatible, and cost-effective methods ofprotecting slopes from erosion and mass wasting. Lavishlyillustrated with more than 150 photographs and supplemented withscores of charts and tables, this book covers the entire subjectfrom general principles and background on the nature of soilerosion and mass movement to detailed information on rootstrengths, treatment selection, unit costs, critical tractivestresses, methods for harvesting and handling live cuttings, andmore. Four illustrated case studies, each addressing a different set ofproblems and solutions, demonstrate both the application ofparticular technologies and the site investigation, planning,scheduling, and organization required to complete these projectssuccessfully. This unique reference handbook * Reviews the horticultural and engineering underpinnings forbiotechnical and soil engineering treatments * Documents and explains the role of woody plants in stabilizingslopes against both surficial erosion and mass movement * Provides details on a broad range of soil bioengineering methods,including live staking, live fascines, brushlayering, live cribwalls, branchpacking, and live slope gratings * Describes various biotechnical methods and materials, includingthe incorporation of vegetation in erosion control blankets,flexible mats, cellular revetments (geocells), rock armor (riprap), and gabion and open-front crib walls * Summarizes the findings of the National ScienceFoundation-sponsored workshop to assess the state of the art anddetermine research needs For practicing professionals, researchers, and students ingeotechnical engineering, geology, soil science, forestry andforest engineering, landscape architecture, environmentalhorticulture, and restoration ecology, this book offers thorough,up-to-date coverage that is not available from any other singlesource.
Author: Roy P.C. Morgan
Publisher: Taylor & Francis
ISBN: 1135831890
Category : Architecture
Languages : en
Pages : 506
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Book Description
This book is an up-to-date review of research and practice on the use of vegetation for slope stabilization and control of surface erosion caused by water and wind. From a basic understanding of the principles and practices of vegetation growth and establishment, it describes how vegetation can be treated as an engineering material and used to solve erosion and slope stability problems.
Author: Indrajit Pal
Publisher: Springer
ISBN: 9811033102
Category : Nature
Languages : en
Pages : 413
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Book Description
This book provides an analytical discussion of the status of disaster risk reduction and governance in an Indian context, drawing examples and lessons from the output of the national and regional level programs and projects and from other relevant experiences in the country. Different types of disasters faced by Indian states are covered, including geophysical and hydrometeorological hazards. The book incorporates and draws upon some of the key lessons from the pre-disaster phase through the disaster phase and finally to the post-disaster phase, thus establishing an effective framework in the form of key lessons learned. The rich content of the book is based on contributions from various stakeholders, from academicians and practitioners to decision makers and nongovernment organizations related to disaster risk management systems in an Indian context. Special emphasis is given to analyzing field experiences from academic perspectives and pointing out key issues along with the relevance of risk governance of disaster risk reduction. The book works as a comprehensive reference in disaster risk governance for disaster managers in India and other countries. The book has 19 chapters organized into four parts. Part I provides the outline and basics of disaster risk governance perspectives at the national level with supporting examples from a global point of view. Part II specifically emphasizes the detailed perspectives on risk governance at the regional and local levels. Part III is devoted to approaches and issues of disaster risk governance and development at various levels, stressing the practices and clear examples of disaster risk governance, policy options, institutional organization, risk-reduction strategies, and key lessons learned. Finally, Part IV highlights risk reduction and cross-cutting issues, focusing on risk mitigation and scientific intervention for disaster risk reduction.
Author: Wendi Goldsmith
Publisher: Springer Science & Business Media
ISBN: 1461479967
Category : Science
Languages : en
Pages : 239
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Book Description
"Bio-Stabilization Case Studies: Treatment and Performance Evaluation" describes and evaluates 30 projects from across the United States where bio-stabilization was employed to address a detrimental naturally occurring process or byproduct of the built environment. Bio-stabilization (or soil bioengineering) refers to the use of plant materials, primarily live cuttings, arranged in the ground in different arrays to reinforce soils and protect upland slopes and/or stream banks against surficial erosion and shallow slope failures. Examples included in the collection represent different regions of the country and their specific conditions and challenges. Each project is illustrated with a number of distinctive photographs to support the reader's understanding and showcase the wide scope of projects and techniques presented. The volume is ideal for civil and environmental engineers and environmental scientists working on watershed, infrastructure projects, and municipal scale installations.
Author: Christopher L. Meehan
Publisher:
ISBN: 9780784412787
Category : Civil engineering
Languages : en
Pages : 2280
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Book Description
This Geotechnical Special Publication contains 229 peer-reviewed technical papers and case studies focusing on the stability, performance, and rehabilitation of slopes, embankments, and dams. Topics include: exploration and characterisation of soil and rock slopesdesign, analysis, and performance of slopesmonitoring and inspection of slopeshazard assessment and managementground improvement and stabilisation in the repair and remediation of slopes. These papers are valuable to geotechnical researchers and practicing engineers, especially those interested in the design and maintenance of slopes, embankments and dams.
Author: Joanne E. Norris
Publisher: Springer
ISBN: 9789048176960
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
This book aims to assist in choosing ecotechnological solutions for slopes that are prone to a variety of mass movements e.g. shallow failure or erosion. The book reviews the types of problematic slopes that may occur and describes briefly the nature of mass movements and the causes of these movements. There is focus on the use of vegetation to stabilize soil on slopes prone to mass movements. The book also introduces new ecotechnological methods, and case studies are discussed.
