Soil Erosion and Sediment Production on Watershed Landscapes

Soil Erosion and Sediment Production on Watershed Landscapes
Author:
Publisher:
Total Pages: 70
Release: 2013
Genre: Sedimentation and deposition
ISBN: 9789290891901

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Losses of the soil resources from otherwise productive and well functioning watersheds is often a recurring problem confronting hydrologists and watershed managers. These losses of soil have both on-site and off-site effects on the watershed impacted. In addition to the loss of inherent soil resources through erosion processes, on-site effects can include the breakdown of soil structure, a decline in organic matter and nutrients in the soil, and a reduction in available soil moisture (Morgan 1995, Gregersen et al. 2007, Brooks et al. 2013). The net impact of these on-site effects can be a loss of productivity that leads to a decline in the values of the natural resources on watershed landscapes.

Watershed Erosion Processes

Watershed Erosion Processes
Author: Tongxin Zhu
Publisher: Springer Nature
Total Pages: 172
Release: 2021-09-29
Genre: Science
ISBN: 3030811514

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This monograph is a fundamental study of watershed erosion and runoff processes. It utilizes decades of soil erosion data to take a comprehensive and balanced approach in covering various watershed erosion processes. While there are many works on soil erosion and conservation, this book fills the gaps in previously published research by focusing more on mass movement, gully erosion, soil piping/tunnel erosion, and the spatial interactions of different erosion processes. Additionally, the book examines erosion processes in extreme rainfall events, something typically absent in short-term studies but discussed in detail here as the book draws on 60 years of research and observations, including 30 years of the author's own investigations of erosion under a wide range of rainfall conditions. The book is divided into 3 parts, and is intended for soil erosion researchers and practitioners, and postgraduate students studying soil erosion and water conservation. Part 1 opens with a comprehensive and critical review of existing literature on soil erosion processes, discusses this book's place among existing literature, and examines the major erosion processes (rainwash, gully erosion, tunnel erosion, and mass movements) including their controlling factors and mechanisms. Part 2 explores the spatial interactions of these different erosion processes to provide a prerequisite for effective design of comprehensive soil erosion control measures in a watershed. Part 3 evaluates the relative significance of these erosion processes in sediment production, the effectiveness of comprehensive soil and water conservation programs, and the applications of watershed modelling in determining the impact of land-use changes on soil erosion and other ecological processes.

Predicting Rainfall Erosion Losses

Predicting Rainfall Erosion Losses
Author: Walter H. Wischmeier
Publisher:
Total Pages: 70
Release: 1978
Genre: Agricultural conservation
ISBN:

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The Universal Soil Loss Equation (USLE) enables planners to predict the average rate of soil erosion for each feasible alternative combination of crop system and management practices in association with a specified soil type, rainfall pattern, and topography. When these predicted losses are compared with given soil loss tolerances, they provide specific guidelines for effecting erosion control within specified limits. The equation groups the numerous interrelated physical and management parameters that influence erosion rate under six major factors whose site-specific values can be expressed numerically. A half century of erosion research in many States has supplied information from which at least approximate values of the USLE factors can be obtained for specified farm fields or other small erosion prone areas throughout the United States. Tables and charts presented in this handbook make this information readily available for field use. Significant limitations in the available data are identified.

Impacts of Landscape Change on Water Resources

Impacts of Landscape Change on Water Resources
Author: Manoj K. Jha
Publisher: MDPI
Total Pages: 180
Release: 2020-11-13
Genre: Science
ISBN: 3039434268

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Changes in land use and land cover can have many drivers, including population growth, urbanization, agriculture, demand for food, evolution of socio-economic structure, policy regulations, and climate variability. The impacts of these changes on water resources range from changes in water availability (due to changes in losses of water to evapotranspiration and recharge) to degradation of water quality (increased erosion, salinity, chemical loadings, and pathogens). The impacts are manifested through complex hydro-bio-geo-climate characteristics, which underscore the need for integrated scientific approaches to understand the impacts of landscape change on water resources. Several techniques, such as field studies, long-term monitoring, remote sensing technologies, and advanced modeling studies, have contributed to better understanding the modes and mechanisms by which landscape changes impact water resources. Such research studies can help unlock the complex interconnected influences of landscape on water resources in terms of quantity and quality at multiple spatial and temporal scales. In this Special Issue, we published a set of eight peer-reviewed articles elaborating on some of the specific topics of landscape changes and associated impacts on water resources.

Soil Erosion

Soil Erosion
Author: Terrence J. Toy
Publisher: John Wiley & Sons
Total Pages: 360
Release: 2002-05-27
Genre: Technology & Engineering
ISBN: 9780471383697

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- Problem der Bodenerosion wird hier mit ganzheitlichem Ansatz besprochen - Ursachen und Auswirkungen der Erosion werden in sozialökonomischen Kontext gebracht - ausführliche Angaben über Methoden der Verfolgung von Bodenerosion (GPS, GIS, Erdfernerkundung) - mit einer gut verständlichen allgemeinen Einführung in Bodenkunde und Hydrologie

Post-fire Soil Erosion Patterns and Processes in a Complex Sagebrush Rangeland Watershed

Post-fire Soil Erosion Patterns and Processes in a Complex Sagebrush Rangeland Watershed
Author: Samantha Pauline Vega
Publisher:
Total Pages: 148
Release: 2018
Genre: Earth sciences
ISBN: 9781392024126

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Across the western United States, wildfires in sagebrush vegetation are occurring at a more frequent rate and higher intensity. Erosion following wildfire is a main concern among land managers due to the threat it poses to resources, infrastructure, and human health. The purpose of this study is to improve scientific understanding of how site physical and biological attributes effect hillslope to watershed scale sediment yield on a mountainous burned sagebrush landscape. The north-facing aspect produced more erosion post-fire due to the combination of soil, topographic characteristics, and vegetation cover pre- and post-fire. The drivers for both years post-fire was mainly wind and winter season runoff processes rather than summer thunderstorms. This study found that substantial erosion can be driven by combined wind and water processes post-fire. These results highlight the control site characteristics have on a landscapes hydrologic and erosion response and the risk winter processes pose to burned landscapes.

Land Stewardship through Watershed Management

Land Stewardship through Watershed Management
Author: Peter F. Ffolliott
Publisher: Springer Science & Business Media
Total Pages: 144
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 1461505895

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We must enhance the effectiveness ofland stewardship and management of the world's natural resources to meet a growing global population's need for conservation, sustainable development, and use of land, water, and other natural resources. Ecosystem-based, mul tiple-use land stewardship is necessary when considering the present and future uses ofland, water, and other natural resources on an operationally efficient scale. We need holistically planned and carefully implemented watershed management practices, projects, and pro grams to accommodate the increasing demand for commodities and amenities, clear water, open space, and uncluttered landscapes. An international conference in Tucson, Arizona, from March 13 to 16, 2000, examined these needs and increased people's awareness of the contributions that ecosystem-based, multiple-use watershed management can make to future land stewardship. The conference was sponsored by the School of Renewable Natural Resources, University of Arizona; the College of Agriculture, University of Arizona; the Rocky Mountain Research Station, USDA Forest Service; the Research Center for Conservation of Water Resources and Disaster Pre vention, National Chung-Hsing University, Taiwan; the Department of Forest Resources, University of Minnesota; the Center for Integrated Natural Resources and Agriculture Man agement, University of Minnesota; the Centro de Investigaciones Biologicas del Noreste, Mexico; the International Arid Lands Consortium; the USDA Natural Resources Conserva tion Service; the Bureau of Land Management of the Department of the Interior; the Salt River Project, Phoenix, Arizona; the Southern Arizona Chapter, Southwestern Section of the Society of American Foresters; and IUFRO Working Party 8. 04. 04, Erosion Control by Watershed Management.

Integrated Watershed Management

Integrated Watershed Management
Author: H. M. Gregersen
Publisher: CABI
Total Pages: 217
Release:
Genre: Nature
ISBN: 1845934210

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As human populations expand and demands upon natural resources increase, the need to manage the environments in which people live becomes more important but also more difficult. Land and water management is especially critical as the use of upstream watersheds can drastically affect large numbers of people living in downstream watersheds. An integrated approach that stresses both the importance of participatory planning and the institutional and technical constraints and opportunities is therefore necessary. The institutional and technical context for managing watersheds and river basins, including the involvement of both the public and private sectors, is also examined.

Sustainability Science for Watershed Landscapes

Sustainability Science for Watershed Landscapes
Author: James Roumasset
Publisher: Institute of Southeast Asian Studies
Total Pages: 368
Release: 2010
Genre: Business & Economics
ISBN: 9814279609

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Proceedings from the International Conference on Sustainability Science for Watershed Landscapes held in Honolulu, Hawaii in November 2007.

Predicting Soil Erosion by Water

Predicting Soil Erosion by Water
Author: Kenneth G. Renard
Publisher:
Total Pages: 412
Release: 1997
Genre: Geophysical prediction
ISBN:

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Introduction and history; Rainfall-runoff erosivity factor (R); Soil erodibility factor (K); Slope length and steepness factors (LS); Cover-management factor (C); Support practice factor (P); RUSLE user guide; Coversion to SI metric system; Calculation of EI from recording-raingage records; Estimating random roughness in the field; Parameter values for major agricultural crops and tillage operations.