Tesis sobre el tema "Environmental management – remote sensing"
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Pretorius, Cindy. "Digital satellite remote sensing for terrestrial coastal zone management". Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52804.
Texto completoENGLISH ABSTRACT: The unique and often fragile environment of the coastal zone is placed under increasing pressure by human development. It is expected that three quarters of the world's population will be living within 60km of the coast by the year 2020. Thorough planning and management are required to prevent coastal degradation. In South Africa, coastal management efforts are being promoted through the implementation of a White Paper for sustainable coastal development. A Coastal Decision Support System (CDSS) was developed to empower local authorities to demarcate and manage sensitive coastal areas by giving them access to relevant botanical and physical information. Land cover/use information for the CDSS was previously mapped manually from hardcopy aerial photography. This method was found to be time-consuming and costly. This study investigated the potential for digital satellite imagery as primary source of data for populating the land cover/use information of the CDSS. A methodology was designed utilising semi-supervised isodata clustering for extracting relevant information for a study area covering 40x20km of coast along the southern coastal sector of South Africa. Digital mapping of SPOT 4 multispectral satellite data was used successfully to map land cover/use information such as wetlands, coastal lakes, dune vegetation, urban areas, forest plantations, natural forest and agricultural areas. A cost comparison was also made between the digital mapping method from satellite imagery used in this research project and the manual mapping from aerial photography. Digital mapping from satellite imagery was found to be more cost-effective in terms of both data and human resource costs. The method outlined and discussed in the research project should provide sufficient guidance for future application of the techniques in populating the CDSS with land cover/use information.
AFRIKAANSE OPSOMMING: Die unieke en dikwels sensitiewe landskap in die kussone is onder aansienlike druk weens ontwikkeling deur mense. Daar word verwag dat 'n derde van die wêreldbevolking teen die jaar 2020 binne 60km van die kus woonagtig sal wees. Dit sal deeglike beplanning en bestuur verg om die agteruigang van hierdie gebied te bekamp. Kussonebestuur word in Suid Afrika aangemoedig deur die implementering van 'n Witskrif vir volhoubare kussone-ontwikkeling. 'n Kusgebied-besluitnemingsondersteuningstelsel (KBOS) is ontwikkel in 'n poging om plaaslike owerhede te bemagtig om sensitiewe kusgebiede af te baken en te bestuur. Die KBOS verleen plaaslike owerhede toegang tot toepaslike inligting oor botaniese en fisiese o~standighede. Grondbedekkinginligting vir die KBOS is in die verlede vanaf hardekopie lugfoto's gekarteer. Hierdie metode is tydrowend en duur. Die potensiaal van digitale satellietbeelde as hoof databron om grondbedekkinginligting vir die KBOS te voorsien is in hierdie studie ondersoek. 'n Metode word in die tesis uiteengesit om 'semi-supervised isodata clustering' te gebruik om die nodige inligting uit die data te onttrek. Die studiegebied sluit 'n area van 40x20km langs die suid kus van Suid Afrika in. Digitale kartering vanaf SPOT 4 multispektrale satellietdata is suksesvol gebruik om grondbedekkingsinligting soos vleilande, kusmere, duin-plantegroei, stedelike gebiede, bosbou, natuurlike bos en landbougebiede te karteer. 'n Kostevergelyking is gedoen tussen die digitale karteringsmetode vanaf satellietbeelde in vergeleke met handkartering vanaf lugfotografie. Die digitale karteringsmetode blyk meer koste-effektief te wees beide in terme van die datakoste sowel as die koste verbonde aan mannekrag. Die omskrywing van die metode in die tesis behoort as goeie riglyn te dien vir die toepassing van die tegniek om grondbedekkinginligting voor te berei vir die KBOS.
Flores, Cordova Africa Ixmucane. "Hyperspectral remote sensing of water quality in Lake Atitlan, Guatemala". Thesis, The University of Alabama in Huntsville, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1549067.
Texto completoLake Atitlan in Guatemala is a vital source of drinking water. The deteriorating conditions of water quality in this lake threaten human and ecological health as well as the local and national economy. Given the sporadic and limited measurements available, it is impossible to determine the changing conditions of water quality. The goal of this thesis is to use Hyperion satellite images to measure water quality parameters in Lake Atitlan. For this purpose in situ measurements and satellite-derived reflectance data were analyzed to generate an algorithm that estimated Chlorophyll concentrations. This research provides for the first time a quantitative application of hyperspectral satellite remote sensing for water quality monitoring in Guatemala. This approach is readily transferable to other countries in Central America that face similar issues in the management of their water resources.
Tooke, Thoreau Rory. "Remote sensing applications for vegetation management in urban environments". Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/11502.
Texto completoAlmamalachy, Yousif. "Utilization of Remote Sensing in Drought Monitoring Over Iraq". Thesis, Portland State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10283891.
Texto completoAgricultural drought is a creeping disaster that overshadows the vegetative cover in general and cropland specifically in Iraq, a country that was well known for its agricultural production and fertile soil. In the recent years, the arable lands in Iraq experienced increasing land degradation that led to desertification, economic losses, food insecurity, and deteriorating environment. Remote sensing is employed in this study and four different indices are utilized, each of which is derived from MODIS satellite mission products. Agricultural drought maps are produced from 2003 to 2015 after masking the vegetation cover. Year 2008 was found the most severe drought year during the study period, where drought covered 37% of the vegetated land. This part of the study demonstrated the capability of remote sensing in fulfilling the need of an early warning system for agricultural drought over such a data-scarce region.
This study also aims to monitor hydrological drought. The Gravity Recovery and Climate Experiment (GRACE) satellite-derived monthly Terrestrial Water Storage (TWS) is the hydrological drought indicator, that is used to calculate the deficit. Severity of drought events are calculated by integrating monthly water deficit over the drought period. In addition, drought recovery time is assessed depending on the estimated deficit. Major drought events are classified into several levels of severity by applying a drought monograph approach. The results demonstrated that GRACE TWS is a reliable indicator for drought assessment over Iraq, and provides useful information for decision makers which can be utilized in developing drought adaptation and mitigation strategies.
Li, Yan. "An integrated water quality monitoring system with dynamic remote sensing feedback /". Online version of thesis, 2007. http://hdl.handle.net/1850/5834.
Texto completoYetman, Gregory George. "Spatial information and environmental decision making : the Windermere Valley, British Columbia". Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30231.
Texto completoCabezas, Rabadán Carlos. "Beach Morphology and its Dynamism from Remote Sensing for Coastal Management Support". Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/165076.
Texto completo[CAT] Les platges són espais costaners que desenvolupen nombroses funcions ambientals. Aquestes proporcionen importants beneficis a la societat i comunitats costaneres, entre les quals destaquen la funció ecològica, el subministrament de protecció per als territoris costaners i el fet que constitueixen un recurs bàsic de la indústria turística. De forma lligada al canvi climàtic, així com a accions humanes que alteren el dinamisme natural de la costa, les platges estan experimentant processos erosius cada vegada més nocius que afecten la seua integritat física i al manteniment de les seues funcions. La gestió de les platges en moltes ocasions no es troba adaptada a les particularitats dels diferents segments costaners. La presa de decisions no es sustenta en informació suficient sobre les característiques, el dinamisme i l'estat actual de les platges, donant lloc a solucions curtterministes o ineficaces. Les característiques geomorfològiques són essencials en el desenvolupament de les seues funcions en condicionar les seues dimensions físiques i el seu comportament enfront de l'acció de la mar. Per això, la seua caracterització de manera detallada i actualitzada és necessària per a dur a terme accions eficients, permetent virar cap a una gestió costanera més ecosistèmica i sostenible. Les tècniques de teledetecció presenten una gran capacitat per a l'adquisició de dades de la superfície terrestre. En concret, els satèl·lits Sentinel-2 i Landsat (5, 7 i 8) permeten disposar de manera gratuïta d'imatges de resolució mitjana amb cobertura mundial i alta freqüència de captura d'informació a un mateix punt. Els algorismes d'extracció de la línia de costa desenvolupats recentment pel Grup de Cartografia Geo-Ambiental i Teledetecció (CGAT - UPV) permeten definir sobre aquestes imatges la posició de la línia de costa, constituint dades potencialment útils per descriure la morfologia de les platges i el seu dinamisme. Universalitzar la seua aplicació requereix el seu testatge i validació en diferents tipus de costa. Per a això, el procés d'extracció ha sigut adaptat per a la seua explotació en entorns mareals, i les línies de costa resultants han sigut avaluades davant diferents condicions oceanogràfiques oferint una precisió pròxima als 5 m RMSE (arrel de l'error quadràtic mitjà). Tenint en compte les necessitats d'informació per a la gestió existents, a partir d'aquestes línies de costa es proposa derivar indicadors que permeten caracteritzar la geomorfologia de les platges i monitorar els seus canvis. Per a això, les metodologies proposades asseguren una gestió eficient de grans volums de línies de costa, sent així capaces de caracteritzar les platges cobrint grans territoris i períodes de temps. Així es deriven l'ample de platja i la grandària dels grans de sediment com a indicadors objectius i fàcilment comprensibles de la geomorfologia de la platja. La modelització espai-temporal de l'estat i els canvis de la línia de costa i de l'amplària possibilita monitorar la resposta de les platges a temporals i a actuacions antròpiques, permetent analitzar els canvis ocorreguts cada pocs dies fins a cobrir dècades. La seua cobertura espacial al costat de la integració amb altres bases de dades cartogràfiques permet caracteritzar la influència de la geomorfologia de la platja en l'acompliment de les seues funcions, permetent una anàlisi holística de la costa a escala regional. Les metodologies desenvolupades en aquesta tesi i els indicadors derivats des de la teledetecció brinden suport per a dotar de criteris i prioritzar les accions dels gestors. Es contribueix així a omplir l'espai existent entre la disponibilitat de tècniques per a obtenir informació remota i la seua aplicació en els processos de presa de decisions sobre la costa.
[EN] Beaches are coastal spaces that perform numerous environmental functions. They provide important benefits to society and coastal communities, including the ecological function, the provision of protection for coastal territories, and constitute a basic resource for the tourism industry. Due to climate change and human actions that alter the natural dynamism of the coast, beaches are experiencing increasingly harmful erosive processes that affect their physical integrity and the maintenance of their ecological functions. Beach management is often not adapted to the particularities of the different coastal segments. Decision-making is not based on sufficient information about characteristics, dynamism, and current state of beaches, resulting in short or ineffective solutions. Geomorphological characteristics are essential in the development of beach functions as they condition their physical dimensions and their behavior in response to the action of the sea. Therefore, their detailed and updated characterization is necessary to carry out efficient actions, allowing a more ecosystemic and sustainable coastal management. Remote sensing techniques have a great capacity for acquiring data from the land surface. In particular, Sentinel-2 and Landsat (5, 7, and 8) satellites freely provide medium resolution images with global coverage and high-revisit frequency. The algorithms for extracting the water/land interface recently developed by the Geo-Environmental Cartography and Remote Sensing Group (CGAT - UPV) allow defining the position of the shoreline on these images, constituting potentially useful data to describe beach morphology and dynamics. Universalizing their application requires testing and validation at different coastal types. For this purpose, the extraction process has been adapted for exploitation in tidal environments, and the resulting shorelines have been assessed under different oceanographic conditions offering an accuracy close to 5 m RMSE (Root-Mean-Square Error). From these shorelines, and taking into account the existing information needs for management, it is proposed to derive indicators to characterize the geomorphology of the beaches and to monitor their changes. To this end, the proposed methodologies ensure the efficient management of large volumes of shorelines, being able to characterize the beaches along broad coastal segments and periods. Thus, beach width and sediment grain size are derived as objective and easily understandable indicators of the beach geomorphology. Spatial-temporal modeling of the state and changes of shoreline position and beach width makes it possible to monitor the response to storms and anthropogenic actions, allowing to analyze changes that occur every few days or over decades. The large spatial coverage together with the integration with other cartographic databases allows characterizing the influence of beach geomorphology in the performance of its functions, offering a holistic view of the coast from a regional scale. The methodologies developed in this thesis and the indicators derived from remote sensing provide support and criteria for prioritizing the actions of managers. This contributes to fill the gap between the availability of techniques to obtain remote information and its application in the coastal decision-making process.
This research integrates findings and results obtained within the framework of the contract FPU15/04501 granted to the author by the Spanish Ministry of Education, Culture, and Sports, which has allowed this doctoral thesis to become a reality. The research has been supported by the funds of the project RESETOCOAST, by the Ministry of Economy, Industry, and Competitiveness (chapters 2 to 5), and the project MONOBESAT PID2019-111435RB-I00 by the Ministry of Science, Innovation, and Universities (chapter 6). About my stay in Portugal, it was possible with the funds of the Erasmus+ program. The contribution of Ó. Ferreira was funded by EW-COAST (PTDC/CTA-OHR/28657/2017) and by FCT and Univ. Algarve through the grant UID/MAR/00350/2013, while S. Costas’ was funded by IF/01047/2014. The following institutions have provided free access to essential data for the development of the publications that constitute this thesis: ESA and USGS for the satellite imagery; Puertos del Estado, and the Portuguese Hydrographic Institute in collaboration with CIMA for supplying oceanographic data; Ministry MITECO and DGSCM for data regarding beach sedimentology and nourishments.
Cabezas Rabadán, C. (2021). Beach Morphology and its Dynamism from Remote Sensing for Coastal Management Support [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/165076
TESIS
Brien, Lynn Ferrara. "Modeling eutrophication vulnerability in coastal Louisiana wetlands impacted by freshwater diversion: a remote sensing approach". Diss., Kansas State University, 2015. http://hdl.handle.net/2097/18999.
Texto completoDepartment of Geography
Kevin P. Price
A major strategy in response to rapid degradation and loss of Louisiana’s coastal wetlands has been the construction of siphon diversion projects. The diversions are designed to reintroduce nutrient enriched freshwater from the Mississippi River into wetland ecosystems to combat saltwater intrusion and stimulate marsh growth. The lack of consensus regarding the effects of river diversions on nutrient enrichment of wetland ecosystems is coupled with major concerns about eutrophication. Locating, assessing, and monitoring eutrophic marsh vegetation represent major challenges to understanding the impacts of freshwater diversions. As a result, this study was undertaken to investigate the feasibility of modeling eutrophication vulnerability of a coastal Louisiana marsh receiving turbid Mississippi River water. The major objective was to integrate remotely sensed data with field measurements of vegetation biophysical characteristics and historical ecosystem survey data to delineate landscape patterns suggestive of vulnerability to eutrophication. The initial step in accomplishing this goal was to model the spatial distribution of freshwater impacts using satellite image-based turbidity frequency data associated with siphon diversion operation. Secondly, satellite and spectroradiometer band combinations and vegetation indices optimal for modeling marsh biophysical characteristics related to nutrient enrichment were identified. Finally, satellite image data were successfully integrated with measures of historical and concurrent marsh biophysical characteristics to model the spatial distribution of eutrophication vulnerability and to elucidate the impacts of freshwater diversions.
Gao, Xiang. "Optical-biophysical relationships and validation of MODIS vegetation indices with multiple fine spatial resolution data in semiarid rangelands". Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279915.
Texto completoLoew, Teagan K. "Improvement to Total Maximum Daily Load (TMDL) Measurements and Monitoring by Satellite Remote Sensing Applications". Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1333388592.
Texto completoMalcolm, Neil W. "The integration of remote sensing and GIS to facilitate sustainable urban environmental management the case of Bangkok, Thailand /". Waterloo, Ont. : University of Waterloo, [School of Planning], 2002. http://etd.uwaterloo.ca/etd/nwmalcolm2002.pdf.
Texto completo"A thesis presented to the University of Waterloo in fulfillment of the requirements for the degree of Master of Environmental Studies in Planning". Includes bibliographical references.
Malcolm, Neil. "The Integration of Remote Sensing and GIS to Facilitate Sustainable Urban Environmental Management: The Case of Bangkok, Thailand". Thesis, University of Waterloo, 2002. http://hdl.handle.net/10012/996.
Texto completoCummins, Shannon E. "Remote Sensing Technology for Environmental Plan Monitoring: A Case Study of the Comprehensive Monday Creek Watershed Plan". Ohio : Ohio University, 2002. http://www.ohiolink.edu/etd/view.cgi?ohiou1020344004.
Texto completoBachour, Roula. "Modeling and forecasting evapotranspiration for better management of irrigation command areas". DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2077.
Texto completoSANDU, CONSTANTIN. "Feature Extraction from Remotely Sensed Imagery for Emergency Management and Environmental Assessment". Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2731327.
Texto completoCzyzowska-Wisniewski, Elzbieta Halina Magdalena. "Fractional snow cover estimation in complex alpineforested environments using remotely sensed data and artificial neural networks". Thesis, The University of Arizona, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3609512.
Texto completoThere is an undisputed need to increase accuracy of snow cover estimation in regions comprised of complex terrain, especially in areas dependent on winter snow accumulation for a substantial portion of their annual water supply, such as the Western United States, Central Asia, and the Andes. Presently, the most pertinent monitoring and research needs related to alpine snow cover area (SCA) are: (1) to improve SCA monitoring by providing detailed fractional snow cover (FSC) products which perform well in temporal/spatial heterogeneous forested and/or alpine terrains; and (2) to provide accurate measurements of FSC at the watershed scale for use in snow water equivalent (SWE) estimation for regional water management.
To address the above, the presented research approach is based on Landsat Fractional Snow Cover (Landsat-FSC), as a measure of the temporal/spatial distribution of alpine SCA. A fusion methodology between remotely sensed multispectral input data from Landsat TM/ETM+, terrain information, and IKONOS are utilized at their highest respective spatial resolutions. Artificial Neural Networks (ANNs) are used to capture the multi-scale information content of the input data compositions by means of the ANN training process, followed by the ANN extracting FSC from all available information in the Landsat and terrain input data compositions. The ANN Landsat-FSC algorithm is validated (RMSE ~ 0.09; mean error ~ 0.001-0.01 FSC) in watersheds characterized by diverse environmental factors such as: terrain, slope, exposition, vegetation cover, and wide-ranging snow cover conditions. ANN input data selections are evaluated to determine the nominal data information requirements for FSC estimation. Snow/non-snow multispectral and terrain input data are found to have an important and multi-faced impact on FSC estimation. Constraining the ANN to linear modeling, as opposed to allowing unconstrained function shapes, results in a weak FSC estimation performance and therefore provides evidence of non-linear bio-geophysical and remote sensing interactions and phenomena in complex mountain terrains. The research results are presented for rugged areas located in the San Juan Mountains of Colorado, and the hilly regions of Black Hills of Wyoming, USA.
Muñoz, Gamboa Paola Sofía. "Assessing Management of Nicaragua’s Caribbean Region Protected Areas Using Remote Sensing: The Indio Maíz Biological Reserve". Ohio University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1628265519609002.
Texto completoMiles, Luke G. "Global Digital Elevation Model Accuracy Assessment in the Himalaya, Nepal". TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1313.
Texto completoDe, Lira-Reyes Gerardo 1960. "Spatial and seasonal variations along the US-Mexico border: An analysis with Landsat Thematic Mapper imagery". Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282357.
Texto completoRocha, Rafael Meirelles Coelho. "Geotecnologias aplicadas à gestão de bacias hidrográficas e certificação ambiental: estudo de caso da empresa Palma Sola S/A". Universidade Estadual do Oeste do Parana, 2012. http://tede.unioeste.br:8080/tede/handle/tede/144.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
The current study aims through some geotechnologies generating a data basis characterized with three hydrographic basins which are inserted in the Palma Sola S/A properties that works with logs in the county of Palma Sola. After characterizing the basins, it has been mapped the properties and it has been analyzed their representativeness in such basins, besides establishing conceptual basis needed to understand the matter. The work has aimed also to subsidy the environmental certification for the company which has acquired the FSC international seal, adjusting to the legislation encouraging the good practices of deforestation management. It has been made the proprieties digital maps of soil use and occupation, following the INCRA (Institute of Colonization for Agrarian Reform) technical policies for geo-referencing of rural properties for registration of the property, maps of use and soil occupation of hydrographic basins, maps with hydrographic and use of the soil in areas of permanent preservation, hypsometric maps, declivity and Numerical Model of the Terrain of hydrographic basins, 3D view and the profile of the hydrographic basins. The data obtained allowed to consider that the geotechnologies are a great tool in helping the environmental planning of hydrographic basins and forest certification, they generate information that answer the FSC principles and help on the reduction of environmental impact in hydrographic basins. The forest certification appeared as a great inductor of forest management good practices according to the environmental legislation.
O presente estudo busca, por meio de algumas geotecnologias, gerar uma base de dados com a caracterização de três bacias hidrográficas em que estão inseridas as propriedades da empresa Palma Sola S/A, que atua no setor madeireiro, no município de Palma Sola/SC. Após a caracterização das bacias, mapeou-se as propriedades e analisou-se a representatividade das mesmas nas respectivas bacias, além de estabelecer bases conceituais necessárias ao entendimento do assunto. O trabalho realizado teve como intuito, também, subsidiar a certificação ambiental do setor florestal da empresa, que adquiriu o selo internacional FSC® (Forest Stewardship Council), adequando-se à legislação e incentivando as boas práticas de manejo florestal. Foram elaborados os mapas digitais de uso e ocupação do solo das propriedades com perímetro seguindo as normas técnicas para georreferenciamento de imóveis rurais do INCRA (Instituto de Colonização e Reforma Agrária) para o cadastramento do imóvel, mapas de uso e ocupação do solo das bacias hidrográficas, mapas com a hidrografia e uso do solo em Áreas de Preservação Permanente, mapas hipsométricos, de declividade e Modelo Numérico do Terreno das bacias hidrográficas, visualização 3D e do perfil das bacias hidrográficas. Os dados obtidos permitiram considerar que as geotecnologias apresentaram-se como uma ótima ferramenta no auxílio ao planejamento ambiental das bacias hidrográficas e à certificação florestal, pois geram informações que atendem aos princípios do FSC® e auxiliam na redução do impacto ambiental nas bacias hidrográficas. A certificação florestal se apresentou como um ótimo indutor das boas práticas de manejo florestal em conformidade com a legislação ambiental.
Bateman, Timothy M. "Exploring and Describing the Spatial and Temporal Dynamics of Medusahead in the Channeled Scablands of Eastern Washington Using Remote Sensing Techniques". DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/6896.
Texto completoEgan, Melissa K. "An implementation of remote application support in a multilevel environment". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Mar%5FEgan.pdf.
Texto completoThesis Advisor(s): Cynthia E. Irvine, Thuy D. Nguyen. "March 2006." Includes bibliographical references (p. 123-124). Also available online.
van, Opstal Jonna D. "Analyzing Irrigation District Water Productivity by Benchmarking Current Operations Using Remote Sensing and Simulation of Alternative Water Delivery Scenarios". DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/4920.
Texto completoMartin, Kevin Scott. "Comparing Twenty-Four Years of Forest Change in Two Communities of Mexico's Meseta Purépecha Using Multi-Spectral Satellite Imagery". PDXScholar, 2004. https://pdxscholar.library.pdx.edu/open_access_etds/2428.
Texto completoHassan-Esfahani, Leila. "High Resolution Multi-Spectral Imagery and Learning Machines in Precision Irrigation Water Management". DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4480.
Texto completoPardo, Milcíades Heitor de Abreu. "ELEMENTOS PARTICIPATIVOS PARA UM PLANO DE GESTÃO AMBIENTAL DO CAMPO EXPERIMENTAL DA EMBRAPA ACRE". Pontifícia Universidade Católica de Goiás, 2012. http://localhost:8080/tede/handle/tede/2912.
Texto completoFor proper exploitation of natural resources, it is necessary, besides the use of tools that assist in the planning of environmental activities and detailed knowledge of the region, an accurate environmental perception of those who inhabit this environment. Therefore, the aim of this paper is to propose a methodology for environmental management that helps in the understanding of processes related to conservation of natural resources with emphasis on its employees and neighboring communities. The study was carried out at Embrapa Acre with the use of direct and indirect research techniques (questionnaires), and also tools necessary for the utility of a geographic information system (GIS). To enhance the environmental perception of the communities involved two kinds of questionnaires were applied with closed and choice multiple questions. These were applied in the employees and neighboring communities levels, which resulted in a better understanding of the existing potentiality for development and the socioeconomic factors of the locality. We observed evident possibilities for the increase of the use of natural resources in the experimental field. The questionnaire results pointed and suggested practical unit developments, such as the reforestation of permanent preservation areas. These facts were corroborated by studies in the evaluation of field data collected and integrated in remote sensing. We highlighted the photointerpretation and as a result the suggestion of the adoption of a GIS by the company. Besides the theoretical emphasis, the compatibility between the use of aerial photographs and data mining was supported by softwares such as ArcGIS and made it possible the development of a database, which included the creation and development of spatial structures recognized and measured in field with the use of geographic position system (GPS). Thus, by means of experimental results obtained, the method of photointerpretation presented effective classification of the experimental field of Embrapa Acre, with elaboration of thematic maps of the area and a GIS. Allied to these techniques, the study infers the global perception of the community and employees as essential and confirms that environmental care has acquire more social and ecological sensitivity, in search of a better quality of life and sustainable development.
Para a exploração adequada dos recursos naturais é necessário, além da utilização de ferramentas que auxiliem no planejamento das atividades ambientais e do conhecimento detalhado da região, uma percepção ambiental apurada daqueles que habitam este meio. Portanto, o objetivo desse trabalho é propor uma metodologia de gestão ambiental que auxilie na compreensão dos processos relacionados à conservação dos recursos naturais, com ênfase em seus colaboradores e comunidades vizinhas. O estudo foi desenvolvido no campo experimental da Embrapa Acre com utilização de técnicas de pesquisa direta e indireta (questionários), além de ferramentas necessárias para utilização de um sistema de informação geográfica (SIG). Para acrescer a percepção ambiental das comunidades envolvidas, foram aplicados dois modelos de questionários com perguntas fechadas e de múltiplas escolhas. Estes foram aplicados nos níveis de colaboradores e das comunidades vizinhas, o que resultou uma melhor compreensão das potencialidades existentes de desenvolvimento e os fatores socioeconômicos da localidade. Observaram-se evidentes possibilidades de aumento do uso dos recursos naturais do campo experimental, como, por exemplo, o reflorestamento de áreas de preservação permanente. Este último, apoiado pelo estudo na avaliação dos dados de campo coletados e integrados no sensoriamento remoto. Destacou-se a fotointerpretação e, como resultado, a sugestão de adoção pela Empresa de um SIG. Além da ênfase teórica a compatibilidade entre o uso de fotografias aéreas e a mineração de dados, apoiou-se em softwares como o ArcGIS e tornou-se possível a elaboração de uma base de dados, que contou com a criação e elaboração de estruturas espaciais reconhecidas e aferidas no campo com auxílio de GPS Global Positioning System . Assim, por meio dos resultados experimentais obtidos, o método da fotointerpretação apresentou efetividade de classificação do campo experimental da Embrapa Acre, com elaboração de mapas temáticos da área e um SIG. Aliado a essas técnicas o estudo infere a percepção global das comunidades e colaboradores como essencial e confirma que o cuidado ambiental adquiriu maior sensibilidade social e ecológica na busca de uma melhor qualidade de vida e desenvolvimento sustentável.
Evans, David M. "A Spatiotemporal Analysis of Aspen Decline in Southern Utah’s Cedar Mountain, Using Remote Sensing and Geographic Information Systems". DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/734.
Texto completoJacintho, Luiz Roberto de Campos. "Geoprocessamento e sensoriamento remoto como ferramentas na gestão ambiental de Unidades de Conservação: o caso da Área de Proteção Ambiental (APA) do Capivari-Monos, São Paulo-SP". Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/44/44133/tde-14082003-230137/.
Texto completoThrough the application of Geographical Information System and Remote Sensing it was elaborated a chart diagnosis for Capivari-Monos Environmental Protection Area. This Conservation Unit is located in the south end of São Paulo city where important Atlantic Forest fragments and strategic water spring still exist. With the support of a Digital Terrain Model it was produced a Geomorphologic map. Applying Map Algebra the data on Geothecnics and Geomorphorlogy had been integrated for mapping the fragility of physical environment. Relief and hidrography conditions pointed indications of neotectonic movements in this region. Employing change detection techniques in Landsat-7 images the deforestation between 1991 and 2000 was evaluated. A land use and land cover map was produced trough Landsat-7 image classification ( supervised per region method). The results show that the urban growth concentrates on the basin of Billings, mainly at the Cratera de Colônia sub-basin where the fragility regarding to phisical environment was considered very high.
McGuinness, Sarah A. "Evaluating the Application of Multiple Remote Sensing Techniques to Investigate Groundwater/Surface-Water Interactions: A Case Study of the Sudd Wetland, South Sudan". University of Toledo / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1588768268946894.
Texto completoNdlovu, Nomzamo Bonisiwe. "Quantifying indigenous forest change in Dukuduku from 1960 to 2008 using GIS and remote sensing techniques to support sustainable forest management planning". Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85622.
Texto completoENGLISH ABSTRACT: This study aimed to understand how Dukuduku Forest in Kwa-Zulu Natal has changed from 1960 to 2008 and whether the change in political regimes, during and post apartheid eras might have contributed to changes in forest extent. To achieve the aims, the following analyses were made: - Qualitative and quantitative spatial analyses of forest change; - Analyses of the correspondence of change with political changes in the country; - Assessment of perception of people living in the Dukuduku forest area. The Dukuduku land cover was mapped from aerial photos using ArcGIS 9.3 to determine whether or not there has been a significant change in the area from 1960-2008, in response to resource use pressures and to come up with the strategic sustainable management plan from the results found. Five aerial photographs were used to determine the changes in land cover from the year: 1960, 1970, 1992, 2005 and 2008. The Land cover types were classified into four classes, Indigenous Forests, Plantation Forests, Water Bodies and Other (open areas, cultivated land, and all the human disturbed and transformed land). The percentage of cover per class was compared across the years to determine overall change in land cover and the rate of change per year was also calculated. The results from the study showed that: - Natural Forest increased by 11% (700 ha), at the rate of 20.56 hectares per year between 1960 and 1992, which is the apartheid era. Between 1992 and 2008, the democratic era, the forest decreased by 34.4% (2472.31ha), at the rate of 168 hectares per year. - The Dukuduku forest community gains resources (timber and grass for construction, art, firewood, medicinal plants, grazing of livestock and food) from the forest. The people are willing to contribute in protecting the forest only if the governing authorities would include them in decisions made, as the NFA demands Participatory Forest Management, but which does not currently exist in Dukuduku.
AFRIKAANSE OPSOMMING: Hierdie studie ondersoek die verandering van die Dukuduku woud in Kwa-Zulu Natal vanaf 1960 tot 2008, en vernaamlik of die verandering in politieke regimes tydens en in die postapartheid eras tot verandering bygedra het in die woud se vorm. Om hierdie doelwitte te breik is die volgende analises gedoen: - Kwalitatiewe en kwantitatiewe ruimtelike analises van woudverandering; - Analises van die korrelasie tussen hierdie fisiese omgewingsverandering en politieke verandering in die land; - Analise van die persepsie van mense wat in die Dukuduku woudgebied woon. Die Dukuduku gronddekking is gekarteer met behulp van lugfotos, waarvoor ArcGIS 9.3 gebruik is om te bepaal of daar noemenswaardige verandering in die gebied plaasgevind het van 1960 tot 2008, in reaksie op hulpbrongebruike, en om ‘n volhoubare bestuursplan gestel voor wat op die bevindinge gebaseer is. Vyf lugfotos is gebruik om verandering in gronddekking te bepaal vir die jare: 1960, 1970, 1992, 2005 en 2008. Die Gronddekking tipes is geklassifiseer in vier klasse naamlik Inheemse Woude, Plantasiebosse, Waterliggame en Ander (oop gebiede, landerye en al die mens-versteurde en getransfomeerde gebiede). Die persentasie van elke dekkingsklas is oor die jare vergelyk om die verandering in algehele grond-dekking te bepaal, en die tempo van verandering is ook bepaal, asook die tempo van verandering. Die resultate van die studie wys dat: - Die natuurlike woud toegeneem het met 11% (700 ha), teen ‘n tempo van 20.56 hektaar per jaar tussen 1960 en 1992, tgedurende die apartheidsera. Tussen 1992 en 2008, die demokratiese era, het die woude verminder met 34.4% (2472.31 ha), teen ‘n tempo van 168 hektaar per jaar. - Die gemeenskap wat in die Dukuduku woud woon verkry hulpbronne van die woud (hout en gras vir konstruksie, kuns, brandhout, medisinale plante, weiding vir vee, en voedsel). Die mense is gewillig om by te dra tot beskerming van die woud indien die owerhede hulle sou betrek in besluite wat geneem word, veral omdat die nasionale Wet op Bosse voorsiening maak vir Deelnemende Bosbestuur, wat tans nie by Dukuduku gebeur nie.
James, Tosin. "Changes in Land Use Land Cover (LULC), Surface Water Quality and Modelling Surface Discharge in Beaver Creek Watershed, Northeast Tennessee and Southwest Virginia". Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3747.
Texto completoZaman, Bushra. "Remotely Sensed Data Assimilation Technique to Develop Machine Learning Models for Use in Water Management". DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/584.
Texto completoO'Connor, Erin E. "Post-fire Vegetative Regrowth Associated with Mature Tree Stands and Topography on Sofa Mountain". Youngstown State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1432908700.
Texto completoAtsuyo, Ito. "Improvement to the legal regime for the effective use of satellite remote sensing data for disaster management and protection of environment". Paris 11, 2008. http://www.theses.fr/2008PA111021.
Texto completoZmijewski, Kirk A. "Connecting the dots: Remote sensing of Glossy and Common Buckthorn (Frangula alnus and Rhamnus cathartica) in the Oak Openings Region of Northwest Ohio". University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365076682.
Texto completoGuo, Qiandong. "A Comparative Study on Coastal Zone Changes and Anthropogenic Impacts between Tampa Bay, USA, and Xiangshan Harbor, China, during the Last 30 Years". Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7292.
Texto completoPerez, Luis G. "Development of a Methodology that Couples Satellite Remote Sensing Measurements to Spatial-Temporal Distribution of Soil Moisture in the Vadose Zone of the Everglades National Park". FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1663.
Texto completoPockrandt, Bryanna Rae. "A multi-year comparison of vegetation phenology between military training lands and native tallgrass prairie using TIMESAT and moderate-resolution satellite imagery". Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/17320.
Texto completoDepartment of Geography
J. M. Shawn Hutchinson
Time series of normalized difference vegetation index (NDVI) data from satellite spectral measurements can be used to characterize and quantify changes in vegetation phenology and explore the role of natural and anthropogenic activities in causing those changes. Several programs and methods exist to process phenometric data from remotely-sensed imagery, including TIMESAT, which extracts seasonality parameters from time-series image data by fitting a smooth function to the series. This smoothing function, however, is dependent upon user-defined input parameter settings which have an unknown amount of influence in shaping the final phenometric estimates. To test this, a sensitivity analysis was conducted using MODIS maximum value composite NDVI time-series data acquired for Fort Riley, Kansas during the period 2001-2012. The phenometric data generated from the different input setting files were compared against that from a base scenario using Pearson and Lin’s Concordance Correlation Analyses. Findings show that small changes to parameter settings results in insignificant differences in phenometric estimates, with the exception of end of season data and growing season length. Next, a time-series analysis of the same MODIS NDVI data for Fort Riley and nearby Konza Prairie Biological Station (KPBS) was conducted to determine if significant differences existed in selected vegetation phenometrics. Phenometrics of interest were estimated using TIMESAT and based on a Savitzky-Golay filter with parameter settings found optimal in the previous study. The phenometrics start of season, end of season, length of season, maximum value, and small seasonal integral were compared using Kolmogorov-Smirnov (K-S) and showed significant differences existed for all phenometrics in the comparison of Fort Riley training areas and KPBS, as well as low- versus high-training intensity areas within Fort Riley. Fort Riley and high-intensity training areas have earlier dates for the start and end of the growing season, shorter growing season lengths, lower maximum NDVI values, and lower small seasonal integrals compared to KPBS and low-intensity training areas, respectively. Evidence was found that establishes a link between military land uses and/or land management practices and observed phenometric differences.
Meyer, Cynthia A. "Evaluating Habitat Vulnerability and Sustainability of Urban Seagrass Resources to Sea Level Rise". Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4918.
Texto completoMrdjen, Igor. "Harmful Algal Blooms in Small Lakes: Causes, Health Risks, and Novel Exposure Prevention Strategies". The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531135626251706.
Texto completoScheer, Marcia Aparecida Procopio da Silva. "Geoprocessamento e o modelo shift-share na analise das transformações do uso da terra nos municipios do Comite da Bacia Hidrografica do Rio Mogi-Guaçu (SP), 1979 a 2001". [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257258.
Texto completoTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
Made available in DSpace on 2018-08-04T06:01:57Z (GMT). No. of bitstreams: 1 Scheer_MarciaAparecidaProcopiodaSilva_D.pdf: 6623925 bytes, checksum: 85b9318d09e09bcd2acaf81b338eeea0 (MD5) Previous issue date: 2004
Resumo: Esta pesquisa teve como foco de estudo detectar as transformações ocorridas no uso da terra na área que abrange municípios componentes do Comitê da Bacia Hidrográfica do Rio Mogi-Guaçu (SP) - CBH-Mogi, entre 1979 e 2001. Ela foi dividida em três etapas distintas. A primeira teve como objetivo a elaboração de um banco de dados de atributos com os resultados da aplicação do modelo Shift-Share sobre dados estatísticos coletados nos Anuários de Produção Agrícola Municipal do Instituto Brasileiro de Geografia e Estatística -IBGE. Os cultivos agrícolas estudados foram: algodão, arroz, café, cana-de-açúcar, feijão, laranja, milho e soja para cada um dos trinta e oito municípios componentes do CBH-Mogi nos conjuntos trienais de 1979/1980/1981, 1989/1990/1991 e 1999/2000/2001. A segunda etapa consistiu na elaboração de um banco de dados espaciais com a análise multitemporal do uso da terra, cujas classes de mapeamento foram cana-de-açúcar, cultura anual, café, citrus e outros usos, para seis municípios componentes do CBH-Mogi (Barrinha, Dumont, Jaboticabal, Pitangueiras, Santa Lúcia e Sertãozinho) por meio de imagens de satélites LANDSAT 2-MSS, órbita/ponto: 235/075 (A e C), 235/076 (A) e 236/075 (A, B e D) do ano de 1981;LANDSAT 5-TM, órbita/ponto: 219/075 (A e C), 219/076 (A) e 220/075 (A, B e D) do ano de 1990; e LANDSAT7-ETM+, órbita/ponto: 219/075 (A e C), 219/076 (A) e 220/075 (A, B e D) do ano de 2001. Na terceira etapa foram realizadas a integração e comparação das duas metodologias de análise da mudança do uso da terra e a produção agrícola, sendo que os resultados evidenciaram que elas são complementares para as análises realizadas. Enquanto o modelo Shift Share tem como principal característica quantificar os principais componentes de variação agrícola, o estudo das transformações no uso da terra por meio de geoprocessamento fez com que fossem locados onde ocorreram estas mudanças e com isso possibilitou inferir sobre as causas que levaram a tal transformação. Na área de estudo pode-se notar que a expansão da produção agrícola ocorreu principalmente pela substituição dos cultivos agrícolas menos rentáveis pela canade- açúcar e também pelo uso mais intensivo da terra, conseqüência do avanço tecnológico no processo produtivo, de políticas governamentais e das tendências do mercado econômico regional, nacional e mundial
Abstract: This research identified the main factors that influenced the land use changes in counties belonging to the Mogi-Guaçu river Watershed Committe, between 1979 and 2001. The area is located in a strategic geographical region and has a significant agricultural production at the state, national and international levels. This study was carriOOout in three steps. The first one had the objective of elaborating a database with the results of the Shift-Share model applied to the statistic data gathered from the Annual Agricultural Municipal Production Report, ftom the Brazilian Institute of Geography and Statistics (IBGE), for the study area in periods of three years: 1979/80/81, 1989/90/91 and 1999/2000/2001. The se~ond step consisted of elaborating a Spatial Database, with the multitemporal analysis of the ~ agricultural land use within the study area (Barrinha, Dumont, Jaboticabal, Pitangueiras, Santa Lúcia and Sertãozinho) using LANDSAT2-MSS, patb/row 235/075 (A e C), 235/076 (A) and 236/075 (A, B e D) of 1981;LANDSAT 5-TM, path/row 219/075 (A e C), 219/076 (A) and 220/075 (A, B e D) of 1990; and LANDSAT 7-ETM+, patb/row 219/075 (A e C), 219/076 (A) e 220/075 (A, B e D) of 2001. The third part was the integration and comparison of the two methodologies for the analysis of land use changes and agricultural production. The resuhs had evidenced that they are complementary for the carried through analyses. The Shift Share model basic characteristic is to quantify the main components of agricultural variation, while the study of land use changes using geoprocessing gave a geographicallocation of these changes possibiliting to analyse causes that had 100 to such transformation. In the study area it can be noticed that the the expansion of agricultural production occured mainly because the substitution of lesser yield agricultural crops by sugarcane, and also by more agricultural intesive land use
Doutorado
Planejamento e Desenvolvimento Rural Sustentável
Doutor em Engenharia Agrícola
Magadzire, Nyasha. "Reconstruction of a fire regime using MODIS burned area data : Charara Safari Area, Zimbabwe". Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80042.
Texto completoENGLISH ABSTRACT: Current efforts to address Zimbabwe‘s decade long veld fire crisis has partly been hindered by a lack of financial resources and fire data. This study illustrates the potential of using the MODIS burned area product as an alternative cost- and time-effective method for reconstructing historical fire records in Zimbabwe. Two MODIS burned area products were evaluated, namely the MCD45A1 and WAMIS (Meraka Institute‘s MODIS burned area product). Both products yielded similar levels of accuracy despite the difference in algorithms. However, it is assumed that at certain thresholds, either in tree cover or fire intensity, WAMIS ceases to map fires as accurately as the MCD45A1. Ten years of fire data for Charara Safari Area (CSA) was extracted from the MCD45A1, and used as a basis to establish six parameters: fire incidence, extent, seasonality, fire size, frequency and fire return interval (FRI). It was observed that approximately 50% of CSA burned annually, with an average of 132 fires occurring every year. Although there was no overall increase or decrease in the extent of area burned over the 10 year study period, an increasing trend in fire incidence was noted. Through an assessment of effective fire size, it was established that more fires in CSA were gradually becoming smaller in size, while the extent of area burned remained fairly constant. Hence, the increase in fire incidences and lack of a corresponding increase in area burned. This study was also used to identify areas in the fire regime that may be a potential ecological risk to the miombo woodland in CSA. Three points of concern were revealed: firstly, a high prevalence of late season fires was observed in the northern bounds of CSA. Secondly, 64.2% of the total area burned in CSA burned between 6 and 10 times over the 10 year period, and lastly, 85% of the total area burned over the period 2001 and 2010 had a FRI of less than 2 years. The combination of late season fires, high fire frequency and short FRI in CSA is indicative of possible alterations in the state of the miombo woodlands, which may have negative socio-economic implications on CSA and its surrounding communities. This study has demonstrated that the MCD45A1 is a useful source of much needed fire information for Zimbabwe. Therefore, the possibility of integrating methods employed in this study into the current collection of fire data should be given due consideration.
AFRIKAANSE OPSOMMING: Huidige pogings om Zimbabwe se dekade lank veldbrand krisis aan te spreek is gedeeltelik belemmer deur 'n gebrek aan finansiële hulpbronne en vuurdata. Hierdie studie illustreer die potensiaal van die gebruik van die MODIS verbrande area produk as 'n alternatiewe koste-en tyd-effektiewe metode vir die rekonstruksie van historiese vuurrekords in Zimbabwe. Twee MODIS verbrande area produkte is geëvalueer, naamlik die MCD45A1 en WAMIS (Meraka Instituut se MODIS verbrand area produk). Beide produkte het soortgelyke vlakke van akkuraatheid opgelewer ten spyte van die verskil in die algoritmes. Dit word egter aanvaar dat op sekere drempels, óf in die boom bedekking, of brandintensiteit, WAMIS brande minder akkuraat karteer as die MCD45A1 produk. Tien jaar van vuurdata vir Charara Safari Area (CSA) is uit die MCD45A1 data onttrek, en gebruik as 'n basis om ses parameters vas te stel: vuurvoorkoms, omvang, seisoenaliteit, vuurgrootte, frekwensie en tyd tussen die terugkeer van vuur na ‗n spesifieke plek (nl. FRI). Dit is waargeneem dat ongeveer 50% van die CSA jaarliks gebrand word, met 'n gemiddeld van 132 brande wat elke jaar voorkom. Daar was nie 'n algehele toename of afname in die omvang van die totale verbrande area oor die 10 jaar studietydperk nie. Maar 'n toenemende neiging in die vuurvoorkoms was wel opgemerk. Deur middel van 'n assessering van effektiewe vuurgrootte, is daar vasgestel dat meer kleiner brande in CSA voorkom, terwyl die omvang van die verbrand area redelik konstant gebly het. Dus was daar ‗n toename in die aantal vuurvoorvalle al was daar nie 'n ooreenstemmende toename in die totale verbrande oppervlakte was nie. Hierdie studie is ook gebruik om gebiede in die vuurregime te identifiseer wat 'n potensiële ekologiese risiko vir die miombobosveld in CSA inhou. Drie punte van kommer word geopenbaar: eerstens, 'n hoë voorkoms van laatseisoen brande is waargeneem in die noordelike grense van CSA. Tweedens, 64,2% van die totale verbrande oppervlakte in die CSA brand tussen 6 en 10 keer bine die 10-jaar periode. Laastens, 85% van die totale verbrande oppervlakte oor die tydperk 2001 tot 2010 het 'n FRI van minder as twee jaar. Die kombinasie van laatseisoen brande, hoë vuurfrekwensie en kort FRI in CSA is 'n aanduiding van moontlike veranderinge in die toestand van die miomboveld, wat negatiewe sosio-ekonomiese implikasies op die CSA en die omliggende gemeenskappe kan uitoefen. Hierdie studie het getoon dat die MCD45A1 'n nuttige bron van broodnodige vuur inligting vir Zimbabwe is. Daarom, moet die moontlikheid van die integrasie van die metodes wat gebruik word in hierdie studie in die huidige versameling van vuurdata behoorlike oorweging gegee word.
Žilinskas, Linas. "Nuotolinių tyrimų metodais gautų duomenų patikimumo įvertinimas". Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_143214-53614.
Texto completoLIDAR terrain laser scanning technique is increasingly used in digital terrain model creation. This method provides dense uneven three-dimensional scatter geometric and radiometric information that simulates objects on earth’s surface. This is a relatively recent method used to record topographic data of the land. One of the key issues still associated with remote sensing methods is its reliability, which is why it is relevant to analyze and evaluate this aspect. This thesis aims at evaluating LIDAR data reliability, comparing them with data obtained by field measurements carried out at selected control areas using geodesic instruments. Riešės river basin area was selected as an object for the study and its elevation data have been investigated in the research. It was concluded that LIDAR data are reliable and can be used for the basin volume calculation. However, the size of the grid should be selected according to terrain relief.
Davidson, Diedre P. y University of Lethbridge Faculty of Arts and Science. "Sensitivity of ecosystem net primary productivity models to remotely sensed leaf area index in a montane forest environment". Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2002, 2002. http://hdl.handle.net/10133/155.
Texto completoxii, 181 leaves : ill. ; 28 cm.
Monteiro, Najara Proença Marques. "Gestão Ambiental apoiada por SIG na estrada da Colônia, Ilha Grande (RJ): uma visão do futuro". Universidade do Estado do Rio de Janeiro, 2012. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=8275.
Texto completoGIS - Geographic Information Systems - have been increasingly studied as tools that facilitate analysis of territorial order to subsidize environmental management. The Big Island, which belongs to the municipality of Angra dos Reis, located in the Bay of Ilha Grande in the southern state of Rio de Janeiro and constitutes the spatial area of analysis. Presents a complex dynamic environment that overlap mainly the uses of environmental protection and tourism activity in a portion of the territory in which legal norms are difficult to apply because they are reflections of interests manifested in three spheres of power - the municipal the state and federal levels. The main objective of this research is the realization of digital image processing to assist territorial management of the Big Island. Focus on the road Abraham - Two Rivers, linking Abraham (landing place for tourists, the main core of the Island) at Two Rivers (site visits by students and researchers, the core that housed the prison currently houses the headquarters of the research center museum and the State University of Rio de Janeiro), both protected by different categories of conservation units. The methodology is based on digital image processing via supervised classification and segmentation by pixel and region. The process occurred from the segmentation (division of a digital image into multiple regions or objects to simplify and / or change the representation of an image) and the image classification process, using pixel classification by classification, and By regions (using the algorithm Bhattacharya). The segmentations and classifications were processed in the computer system SPRING version 5.1.7 and aim to assist in analyzing the usage scenarios and design earth from the identification of the focal points of weakness found along the road Abraham-Two Rivers, prone to occurrences mass movements and to potentiate the effect of forest edge and environmental impacts. The methodology used was based on field analysis and comparisons of technologies for image classification. This road axis connecting the two cores have significant importance in the history of the island, it circulating vehicles, light and heavy, service, pedestrians and tourists. As a result of this the maps were generated by pixel classification, the classification by region maps, map of the intersection with fuzzy supervised classification maps by region and maps with the locations where they are collected in the field verified occurrence of mass movements in ALOS, 2000, IKONOS, 2003 and orthophotos, 2006. These maps seek to serve to support decision-making by local bodies responsible.
Dehm, Dustin. "A Small Unmanned Aerial System (sUAS) Based Method for Monitoring Wetland Inundation & Vegetation". University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1556713788128588.
Texto completoPhilipson, née Ammenberg Petra. "Environmental Applications of Aquatic Remote Sensing". Doctoral thesis, Uppsala University, Centre for Image Analysis, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3328.
Texto completoMany lakes, coastal zones and oceans are directly or indirectly influenced by human activities. Through the outlet of a vast amount of substances in the air and water, we are changing the natural conditions on local and global levels.
Remote sensing sensors, on satellites or airplanes, can collect image data, providing the user with information about the depicted area, object or phenomenon. Three different applications are discussed in this thesis. In the first part, we have used a bio-optical model to derive information about water quality parameters from remote sensing data collected over Swedish lakes. In the second part, remote sensing data have been used to locate and map wastewater plumes from pulp and paper industries along the east coast of Sweden. Finally, in the third part, we have investigated to what extent satellite data can be used to monitor coral reefs and detect coral bleaching.
Regardless of application, it is important to understand the limitations of this technique. The available sensors are different and limited in terms of their spatial, spectral, radiometric and temporal resolution. We are also limited with respect to the objects we are monitoring, as the concentration of some substances is too low or the objects are too small, to be identified from space. However, this technique gives us a possibility to monitor our environment, in this case the aquatic environment, with a superior spatial coverage. Other advantages with remote sensing are the possibility of getting updated information and that the data is collected and distributed in digital form and therefore can be processed using computers.
Philipson, Petra. "Environmental applications of aquatic remote sensing /". Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://publications.uu.se/theses/91-554-5542-5/.
Texto completoMiralha, Lorrayne. "ACCOUNTING FOR SPATIAL AUTOCORRELATION IN MODELING THE DISTRIBUTION OF WATER QUALITY VARIABLES". UKnowledge, 2018. https://uknowledge.uky.edu/geography_etds/55.
Texto completoLi, Xi. "Use of LiDAR in Object-based Classification to Characterize Brownfields for Green Space Conversion in Toledo". University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1493417634359152.
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