Quantifying Error In Vegetation Mapping
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Quantifying Error In Vegetation Mapping
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Author : Erica Serna
language : en
Publisher:
Release Date : 2011
Quantifying Error In Vegetation Mapping written by Erica Serna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Electronic dissertations categories.
Understanding the current distribution and structure of forest vegetation is important for designing forest management plans and prioritizing restoration at landscape scales. This project provides information on Random Forest, a relatively new statistical package in the field of forestry, and patterns in mapping errors, a less explored field of study particularly in the forests of the Midwest United States. Vegetation maps can be made from classification and regression trees, such as Random Forest, by integrating environmental variables with vegetation information. An understanding of the accuracy of the maps is important because management plans and restoration efforts are more effective with accurate data. This study was done in forested regions in Minnesota with the purpose of 1) analyzing physiographic factors controlling tree species distribution; 2) mapping potential species distributions; 3) quantifying error in vegetation mapping; and 4) understanding map accuracy by evaluating minimum amounts of sample data necessary for reliable mapping. The results from Random Forest were found to be realistic ecologically and biologically. Also, tree species required records of 1-2 trees per 10,000 ha to produce accurate maps. Knowing the minimum amount of data points necessary for acceptable accuracy assists scientists mapping vegetation. This study demonstrates the effectiveness of Random Forest in vegetation mapping, which can be useful for future vegetation mapping.
Quantifying Spatial Uncertainty In Natural Resources
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Author : H. Todd Mowrer
language : en
Publisher: CRC Press
Release Date : 2000-03-01
Quantifying Spatial Uncertainty In Natural Resources written by H. Todd Mowrer and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-03-01 with Technology & Engineering categories.
This book will be useful both to those new to spatial uncertainty assessment and to experienced practitioners.
Guidelines For The Use Of Digital Imagery For Vegetation Mapping
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Author :
language : en
Publisher:
Release Date : 1995
Guidelines For The Use Of Digital Imagery For Vegetation Mapping written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Artificial satellites in remote sensing categories.
Computational Science And Its Applications Iccsa 2011
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Author : Beniamino Murgante
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-06-15
Computational Science And Its Applications Iccsa 2011 written by Beniamino Murgante 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 2011-06-15 with Computers categories.
The five-volume set LNCS 6782 - 6786 constitutes the refereed proceedings of the International Conference on Computational Science and Its Applications, ICCSA 2011, held in Santander, Spain, in June 2011. The five volumes contain papers presenting a wealth of original research results in the field of computational science, from foundational issues in computer science and mathematics to advanced applications in virtually all sciences making use of computational techniques. The topics of the fully refereed papers are structured according to the five major conference themes: geographical analysis, urban modeling, spatial statistics; cities, technologies and planning; computational geometry and applications; computer aided modeling, simulation, and analysis; and mobile communications.
Vegetation Mapping
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Author : Roy Alexander
language : en
Publisher: John Wiley & Sons
Release Date : 2000-06-15
Vegetation Mapping written by Roy Alexander and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-06-15 with Nature categories.
This work offers a review of contemporary techniques in vegetation mapping and analysis with a snapshot of their applications. It deals with ground, air and space-based techniques applied at a range of spatial scales.
Wildland Fuel Fundamentals And Applications
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Author : Robert E. Keane
language : en
Publisher: Springer
Release Date : 2014-11-04
Wildland Fuel Fundamentals And Applications written by Robert E. Keane and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-04 with Science categories.
A new era in wildland fuel sciences is now evolving in such a way that fire scientists and managers need a comprehensive understanding of fuels ecology and science to fully understand fire effects and behavior on diverse ecosystem and landscape characteristics. This is a reference book on wildland fuel science; a book that describes fuels and their application in land management. There has never been a comprehensive book on wildland fuels; most wildland fuel information was put into wildland fire science and management books as separate chapters and sections. This book is the first to highlight wildland fuels and treat them as a natural resource rather than a fire behavior input. Moreover, there has never been a comprehensive description of fuels and their ecology, measurement, and description under one reference; most wildland fuel information is scattered across diverse and unrelated venues from combustion science to fire ecology to carbon dynamics. The literature and data for wildland fuel science has never been synthesized into one reference; most studies were done for diverse and unique objectives. This book is the first to link the disparate fields of ecology, wildland fire, and carbon to describe fuel science. This just deals with the science and ecology of wildland fuels, not fuels management. However, since expensive fuel treatments are being planned in fire dominated landscapes across the world to minimize fire damage to people, property and ecosystems, it is incredibly important that people understand wildland fuels to develop more effective fuel management activities.
Guidelines For The Use Of Digital Imagery For Vegetation Mapping
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Author : Henry Lachowski
language : en
Publisher: DIANE Publishing
Release Date : 1996-09
Guidelines For The Use Of Digital Imagery For Vegetation Mapping written by Henry Lachowski and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-09 with categories.
A basic reference for those considering digital imagery, particularly satellite imagery for vegetation mapping. Contents: using remote sensing and GIS for mapping vegetation; remote sensors and remotely sensed data; determining appropriate uses for satellite imagery; defining the classification scheme; collecting reference data; assessing accuracy; creating polygons; project management; the basic tour; and case studies. Important terms and ideas are introduced while showing the progression of key activities in the classification and mapping process.
Plant And Vegetation Mapping
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Author : Franco Pedrotti
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-08-16
Plant And Vegetation Mapping written by Franco Pedrotti 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 2012-08-16 with Science categories.
The book is concerned principally with geobotanical mapping. Geobotany is a broad science that deals with the study of species and of vegetation communities in relation to the environment; it includes other, perhaps more familiar sciences, such as plant geography, plant ecology, and chorology, and phytosociology (plant sociology). Geobotanical cartography is a field of thematic cartography that deals with the interpretation and representation, in the form of maps, of those spatial and temporal phenomena that pertain to flora, vegetation, vegetated landscapes, vegetation zones, and phytogeographical units. The production of a geobotanical map represents the last stage in a cognitive process that begins with observations in the field and continues with the collection of sample data, interpretation of the phenomena observed, and their appropriate cartographic representation; geobotanical cartography is closely tied to the concepts and scope of geobotany in general
Scaling And Uncertainty Analysis In Ecology
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Author : Jianguo Wu
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-07-02
Scaling And Uncertainty Analysis In Ecology written by Jianguo Wu 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 2006-07-02 with Science categories.
This is the first book of its kind – explicitly considering uncertainty and error analysis as an integral part of scaling. The book draws together a series of important case studies to provide a comprehensive review and synthesis of the most recent concepts, theories and methods in scaling and uncertainty analysis. It includes case studies illustrating how scaling and uncertainty analysis are being conducted in ecology and environmental science.
Explicitly Linking Field And Satellite Derived Measurements For Improved Vegetation Quantification And Disturbance Detection
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Author : Thomas Brandt Christiansen
language : en
Publisher:
Release Date : 2014
Explicitly Linking Field And Satellite Derived Measurements For Improved Vegetation Quantification And Disturbance Detection written by Thomas Brandt Christiansen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Arid and semi-arid ecosystems have been recognized as critical in supporting over one-third of the world's populations, notably those more dependent on the natural resource base for their livelihoods. These systems, and especially savannas within them, are highly vulnerable to predicted fluctuations in climatic change, disturbances, and management regimes. This research posits these areas in a social-ecological system (SES) framework that encompasses human, governance, and recourse units. A challenge in both SES and CHANS (coupled human and natural systems) research is how to explicitly and empirically link the social and the ecological, and further how to extrapolate from sets of case studies to the greater region, supra-system, or SES / CHANS theory and practice. This work leverages Landsat and IKONOS imagery as well as field-based vegetation sampling (structure and species) through the use of IDL (interactive data language) visualizations, both pixel- and object-based classifications, and CART (classification and regression tree) analysis. The longer term goal of this work is to produce a protocol and classification scheme modified from the 1976 Anderson scheme to include both structure and disturbance explicitly in processing, mapping, monitoring, and management. In creating SVCs (Structural Vegetation Categories) built from field data there is strong potential for extracting 3-D data from 2-D imagery once the protocol produces robust results with high enough accuracies. As hypothesized, the object-based classifications produced higher overall accuracy (70.83%), though the pixel-based classification performed better in the detection of woodlands (90.91%). Given the spatial scales of the imagery as compared to the size of the field plots and transect spacing, it is important to remember that when extrapolating to other areas a critical part of spatial scale is extent (not just grain). That is, the inherent clumping of trees versus shrubs may be driving the better performance of pixel-based for woodlands but not so for shrublands. Sensitivity to placement of plots and especially plot sizes across future sites will help explore this question and move SES research into a realm whereby remote sensing and vegetation sampling can provide improved empirical linkages among the subsystems and their feedbacks.