Automated Modelling Of Digital Elevation Models For Predictive Ecosystem Mapping In Gis
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Automated Modelling Of Digital Elevation Models For Predictive Ecosystem Mapping In Gis
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Author : Nancy Doreen Alexander
language : en
Publisher:
Release Date : 2001
Automated Modelling Of Digital Elevation Models For Predictive Ecosystem Mapping In Gis written by Nancy Doreen Alexander and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
This thesis is an exploratory analysis of automated mapping protocols that can be used to support Terrestrial Ecosystem Mapping and Predictive Ecosystem Mapping in British Columbia. This thesis employs neighbourhood analysis of elevation and its derivatives to discriminate the bioterrain elements defined by Terrestrial Ecosystem Mapping standards. In achieving these standards, discrimination beyond the basic topographic forms presented in current research is explored. The method developed strives to be - easily implemented by mapping projects employing standard GIS software ; flexible so that the extracted topographic forms can be tailored to varying project objectives ; compatible with the hierarchical procedure employed in Terrestrial Ecosystem Mapping ; efficient and accurate in that the process is advantageous over manual mapping methods. The effect of data quality is addressed through an assessment of DEM data interpolation techniques and classification accuracy. Random and systematic artifacts of the DEM that influence the quality of the derivatives are explored. The issue of scale-dependent shape is addressed by the constraints of objective-based mapping in which a map scale is specified and the most basic shape elements are aggregated into contiguous classes by a roving neighbourhood window. The results indicate that basic topographic elements are mapable from relief as well as first and second order elevation derivatives. These results give preliminary accuracy of 80% based on the three classes tested. The procedure requires decisions at every step, but it is felt that this complements the traditional mapping process in that it is hierarchical, and requires a synthesis of extensive knowledge of vegetation and landscape across many scales. Key Words: elevation, digital elevation model, topography, slope, aspect, curvature, Terrestrial Ecosystem Mapping, Predictive Ecosystem Mapping, scale, random, systematic error.
Environmental Modelling With Gis And Remote Sensing
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Author : Andrew Skidmore
language : en
Publisher: CRC Press
Release Date : 2017-08-11
Environmental Modelling With Gis And Remote Sensing written by Andrew Skidmore and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-11 with Technology & Engineering categories.
Most government agencies and private companies are investing significant resources in the production and use of geographical data. The capabilities of Geographical Information Systems (GIS) for data analysis are also improving, to the extent that the potential performance of GIS software and the data available for analysis outstrip the abilities of
The Climate Conflict Displacement Nexus From A Human Security Perspective
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Author : Mohamed Behnassi
language : en
Publisher: Springer Nature
Release Date : 2022-04-01
The Climate Conflict Displacement Nexus From A Human Security Perspective written by Mohamed Behnassi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-01 with Social Science categories.
Climate change is reshaping the planet, its ecosystems, and the evolution of human societies. Related impacts and disasters are triggering significant shifts in the inextricably interconnected human and ecological systems with unprecedented potential implications. These shifts not only threaten survival at species and community levels, but are also emerging drivers of conflicts, human insecurity, and displacement both within and across national borders. Taking these shifting dynamics into account, particularly in the Anthropocene era, this book provides an analysis of the climate-conflict-migration nexus from human security and resilience perspectives. The core approach of the volume consists of unpacking the key dynamics of the nexus between climate change, conflict, and displacement and exploring the various local and global response mechanisms to address the nexus, assess their effectiveness, and identify their implications for the nexus itself. It includes both conceptual research and empirical studies reporting lessons learned from many geographical, environmental, social, and policy settings.
Digital Elevation Models
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Author : Atef A. Elassal
language : en
Publisher:
Release Date : 1983
Digital Elevation Models written by Atef A. Elassal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Cartography categories.
Digital Elevation Models
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Author : Geological Survey (U.S.). National Mapping Division
language : en
Publisher:
Release Date : 1990
Digital Elevation Models written by Geological Survey (U.S.). National Mapping Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Altitudes categories.
Digital Terrain Modelling
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Author : Robert Joseph Peckham
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-07-30
Digital Terrain Modelling written by Robert Joseph Peckham and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-30 with Science categories.
This publication is the first book on the development and application of digital terrain modeling for regional planning and policy support. It is a compilation of research results by international research groups at the European Commission’s Joint Research Centre, providing scientific support to the development and implementation of EU environmental policy. This practice-oriented book is recommended reading for practising environmental modelers and GIS experts working on regional planning and policy support applications.
Gis Environmental Modeling And Engineering
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Author :
language : en
Publisher: CRC Press
Release Date : 2009-12-23
Gis Environmental Modeling And Engineering written by and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-12-23 with Technology & Engineering categories.
Spatial dimensions need to be properly captured if modeling and engineering techniques are to be successfully applied in addressing environmental problems. The links between the geographical information systems (GIS) that capture this data, simulation modeling, and engineering offer tremendous possibilities for building versatile support systems fo
Geomorphometry
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Author : Tomislav Hengl
language : en
Publisher: Elsevier
Release Date : 2008-11-20
Geomorphometry written by Tomislav Hengl and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-20 with Science categories.
Geomorphometry is the science of quantitative land-surface analysis. It draws upon mathematical, statistical, and image-processing techniques to quantify the shape of earth's topography at various spatial scales. The focus of geomorphometry is the calculation of surface-form measures (land-surface parameters) and features (objects), which may be used to improve the mapping and modelling of landforms to assist in the evaluation of soils, vegetation, land use, natural hazards, and other information. This book provides a practical guide to preparing Digital Elevation Models (DEM) for analysis and extracting land-surface parameters and objects from DEMs through a variety of software. It further offers detailed instructions on applying parameters and objects in soil, agricultural, environmental and earth sciences. This is a manual of state-of-the-art methods to serve the various researchers who use geomorphometry. Soil scientists will use this book to further learn the methods for classifying and measuring the chemical, biological, and fertility properties of soils and gain a further understaing of the role of soil as a natural resource. Geologists will find value in the instruction this book provides for measuring the physical features of the soil such as elevation, porosity, and structure which geologists use to predict natural disasters such as earthquakes, volcanoes, and flooding. * Technical details on a variety of software packages allow researchers to solve real-life mapping issues * Provides soil and agronomy researchers best practice techniques for soil data analysis to assist in enhanced land-use and planning * Offers geologists essential tactics for better environmental management by providing a comprehensive analysis of the physical features of soil * Companion website includes access to the latest technological advancements previously unpublished in any other comprehensive source: geomorphometry software, DEM data sources, and applications
Digital Elevation Model Technologies And Applications
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Author : David Francis Maune
language : en
Publisher:
Release Date : 2001
Digital Elevation Model Technologies And Applications written by David Francis Maune and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Computers categories.
Representing Modeling And Visualizing The Natural Environment
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Author : Nick Mount
language : en
Publisher: CRC Press
Release Date : 2008-12-22
Representing Modeling And Visualizing The Natural Environment written by Nick Mount and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-12-22 with Nature categories.
The explosion of public interest in the natural environment can, to a large extent, be attributed to greater public awareness of the impacts of global warming and climate change. This has led to increased research interest and funding directed at studies of issues affecting sensitive, natural environments. Not surprisingly, much of this work has re
