Download or read book Gully Erosion Assessment in Nepal written by Subhadra Jha and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gully Erosion Assessment and Control Guide written by Sari Glover and published by . This book was released on 2013 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This document is designed to help the reader understand the basics of gully erosion. It will assist users to identify if a gully is actively eroding, identify the severity of the erosion and discuss common management options."--Executive summary.
Download or read book Soil and water conservation in Siwalik Hills of Nepal Himalaya written by Sohan Ghimire and published by Lulu.com. This book was released on 2012-06-12 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the issues of soil erosion and sediment dynamics in the Siwalik Hills of Nepal Himalaya.
Download or read book Environment Assessment of Nepal written by and published by . This book was released on 2006 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gully Erosion Assessment and Prediction on Non agricultural Lands Using Logistic Regression written by Katie Handley and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gully erosion is a serious problem on military training lands resulting in not only soil erosion and environmental degradation, but also increased soldier injuries and equipment damage. Assessment of gully erosion occurring on Fort Riley was conducted in order to evaluate different gully location methods and to develop a gully prediction model based on logistic regression. Of the 360 sites visited, fifty two gullies were identified with the majority found using LiDAR based data. Logistic regression model was developed using topographic, landuse/landcover, and soil variables. Tests for multicollinearity were used to reduce the input variables such that each model input had a unique effect on the model output. The logistic regression determined that available water content was one of the most important factors affecting the formation of gullies. Additional important factors included particle size classification, runoff class, erosion class, and drainage class. Of the 1577 watersheds evaluated for the Fort Riley area, 192 watersheds were predicted to have gullies. Model accuracy was approximately 79% with an error of omission or false positive value of 10% and an error of commission or false negative value of 11%; which is a large improvement compared to previous methods used to locate gully erosion.
Download or read book Highland lowland Interactions in the Ganges Brahmaputra River Basin written by Leendert Adriaan Bruijnzeel and published by . This book was released on 1989 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicting Soil Erosion by Water written by Kenneth G. Renard and published by . This book was released on 1997 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Erosion and Sedimentation in the Nepal Himalaya written by V. J. Galay and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion and Sedimentation in the Nepal Himalaya written by Nepal. Water and Energy Commission and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report to the Government of Nepal on Torrent and Erosion Control written by Otto Tautscher and published by . This book was released on 1974 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Soils of Nepal written by Roshan Babu Ojha and published by Springer Nature. This book was released on 2021-10-14 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book publishes consolidated information on the soils of Nepal from all possible sources. The Survey Department, Government of Nepal, conducted two national scale soil survey projects to classify soils of Nepal (Land Resource Mapping Project ended in 1985, and National Land Use Planning Project ended in 2021). Both projects adopted the United States Department of Agriculture system of soil classification. Besides, National Soil Science Research Center (previously known as Soil Science Division) of Nepal Agricultural Research Council and Soil Management Directorate, Department of Agriculture, also worked on soils of Nepal. To date, the information on the soils of Nepal is not published in well-documented form but has been reported widely as gray literature (project report or government report) or peer-review articles. 'The Soils of Nepal’ is a part of ‘World Soils Book Series’ which constitutes twelve chapters—covering broad aspects such as soil research history, climate, geology, soil classification and mapping, and soil fertility. Furthermore, information about soil properties and relation between soil constituents of the dominant soil types of Nepal and their scope of use in the context of land use are described. This book also tries to simplify the intricate relationship among soil, culture, and people. Each chapter contains a comprehensive, richly illustrated, and up-to-date overview of the soils of Nepal. We believe it fulfils a quest for a global audience including students, educators, extension workers, and soil scientists, who are interested to know the young soils of Nepal.
Download or read book Gully Erosion Assessment and Growth Prediction on Military Training Lands written by Chelsea Rose Corkins and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Military maneuvers result in significant physical and environmental impacts to the landscape. These impacts generally result in a loss of vegetative cover and increased watershed runoff and rate depending on vehicle speed, turning radius, and soil moisture content. Unless adequately monitored or mitigated, this increased runoff can lead to excessive soil erosion and gully formation. Past studies have revealed that these gullies can impact water quality from excessive erosion and create concerns regarding soldier safety. In order to better understand how gullies form and evolve overtime on military installations, a study is being conducted at Fort Riley, KS. In 2010, approximately forty gullies were identified, assessed, and measured using common erosion monitoring and surveying techniques. These gully locations, and any newly formed gullies, were remeasured using these same methods in 2012 to determine the rate of growth for each site with respect to width, depth, and headcut. Of fifty-nine gullies total, twenty one were initially included in this study. Upon further analysis including the utilization of watershed characteristics and land management techniques, eleven of the 21 utilized gullies were deemed appropriate to include in predictive assessment, as these eleven systems exhibited singular headcut migration. Multiple Regression Analysis was utilized to produce predictive equations for Headcut Growth. This equation [Headcut Growth = 0.666 + 0.137(Watershed Slope) -- 0.478(Training Intensity) + 0.757(log[Watershed Area]) -- 0.278(Drainage Density) -- 0.0138(Above Ground Biomass Change) + 0.187(Burning Frequency] resulted in a model relationship of approximately 90%, with Watershed Slope being the most significant variable when an output Headcut Growth was reached.
Download or read book Soil Erosion Studies in Nepal written by Prakash Mathema and published by . This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Sedimentation written by Silke Wieprecht and published by CRC Press. This book was released on 2016-11-30 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment dynamics in fluvial systems is of great ecological, economic and human-health-related significance worldwide. Appropriate management strategies are therefore needed to limit maintenance costs as well as minimize potential hazards to the aquatic and adjacent environments. Human intervention, ranging from nutrient/pollutant release to physical modifications, has a large impact on sediment quantity and quality and thus on river morphology as well as on ecological functioning. Truly understanding sediment dynamics requires as a consequence a multidisciplinary approach.River Sedimentation contains the peer-reviewed scientific contributions presented at the 13th International Symposium on River Sedimentation (ISRS 2016, Stuttgart, Germany, 19-22 September 2016), and includes recent accomplishments in theoretical developments, numerical modelling, experimental laboratory work, field investigations and monitoring as well as management methodologies.
Download or read book Multi Scale Assessment of Gully Erosion at Road Drainage Outlets written by Emma Louise Estabrook and published by . This book was released on 2022 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gully erosion and sediment deposition from roads are underrated sources of sediments entering receiving waterways. While gully erosion has been studied throughout the world, the monitoring of the temporal and spatial erosional processes related to culverts and road drainage is rare. The objectives of this study are to quantify rates of gully erosion from Vermont's transportation drainage networks at multiple temporal scales and report on insights gained from a multi-scale approach to monitoring gully erosion. To quantify event to seasonal timescales of gully erosion, high resolution terrestrial LiDAR surveys were conducted at 13 field sites. Field sites were monitored at least seasonally from September 2019 to May 2021. To evaluate longer-term rates of gully erosion, a coarser approach was implemented that used high resolution airborne LiDAR that covered a longer time interval than field surveys allowed. Culvert outlet locations were inspected for evidence of gully erosion and a sample of gully volume change was estimated via digital elevation model of difference. Results of this study indicate that gullies at road drainage outfalls are a common occurrence in our study region with a median gully frequency of one in every 2 kilometers of road. Gully presence is influenced by road length, elevation, and slope steepness, revealed by different scales of analysis. Estimates of gully change ranged -24 m3/year to 269 m3/year with 76% of features examined eroding less than 10m3/year. These features appear to be dynamically evolving, with some evidence that gully stabilization occurs in some sites over time. Gully stabilization may be achieved over time as these features reach an equilibrium slope or when grade controls such as fallen trees arrest incision. This study can be used as a building block for making roads more resilient to extreme weather events and reducing the environmental impact of roads.
Download or read book Land Cover Change and Its Eco environmental Responses in Nepal written by Ainong Li and published by Springer. This book was released on 2017-08-22 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a systematic investigation of the ecological and environmental issues related to the land cover changes in Nepal by researchers from both China and Nepal. It discusses the eco-environmental issues faced by Nepal, particularly in the hills and mountain regions. It also sheds light on the global concerns regarding the eco-environment issues of mountains, and analyzes the various causes and potential consequences of eco-environmental degradation in Nepal. The book is of particular interest to students, researchers, experts, and decision-makers wanting to gain a general overview of land cover in Nepal and its dynamics, environment and natural resources, as well as mountain hazards.
Download or read book Anthropogeomorphology written by Gouri Sankar Bhunia and published by Springer Nature. This book was released on 2022-02-24 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores state-of-art techniques based on open-source software and statistical programming and modelling in modern geospatial applications, specifically focusing on recent trends in data mining techniques and robust modelling in Geomorphological, Hydrological, Bio-physical and Social activities. The book is organized into physical, mountainous, coastal, riverine, forest, urban and biological activities, with each chapter providing a review of the current knowledge in the focus area, and evaluating where future efforts should be directed. The text compiles a collection of recent developments and rigorous applications of Geospatial computational intelligence (e.g., artificial neural network, spatial interpolation, physical and environmental modelling and machine learning algorithms etc) in geomorphic processes from a team of expert contributors. The authors address the wide range of challenges and uncertainties in the study of earth system dynamics due to climate change, and complex anthropogenic interferences where spatial modelling may be applied in the risk assessment of vulnerable geomorphological landscapes. The book will act as a guide to find recent advancements in geospatial artificial intelligence techniques and its application to natural and social hazards. This information will be helpful for students, researchers, policy makers, environmentalists, planners involved in natural hazard and disaster management, NGOs, and government organizations.
