Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 79 for “"land cover types"”.
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Patterns of land cover change in Kanyati communal land in Zimbabwe
… trend with significant effects on existing land cover types and ecosystems. High rates of human population growth in southern Africa and subsequent increased pressure on land has led to the extension of cultivation and settlement into marginal lands. This study investigates the spatial …
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Mammal Distributions and Habitat Models for South Dakota
… is compared to protection offered from public lands, identifying species that are not adequately protected (i.e., have "gaps" in protection). Then, conservation may be suitable for unprotected species. South Dakota's Gap Analysis Project began in 1997 with information gathered on vegetation, …
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Development of a Support-Vector-Machine-based Supervised Learning Algorithm for Land Cover Classification Using Polarimetric SAR Imagery
Land cover classification using Synthetic Aperture Radar (SAR) data has been a topic of great interest in recent literature. Food commodities output prediction through crop identification, environmental monitoring, and forest regrowth tracking are some of the many problems that can be aided by land …
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The Effects of Land Cover Change on the Spatial Distribution of Lyme disease in Northern Virginia Since 2005
… in the country. This research evaluates the land cover within specified counties of northern Virginia to determine if a correlation exists between forest fragmentation, suburbanization, and cases of human Lyme disease as has been demonstrated in other Lyme endemic regions in the United …
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Andean sediment response to natural and anthropogenic changes at the catchment scale
… catchments. This thesis presents a new land cover map for the Rio Santa catchment, Peru, that builds on freely available spatial data and includes more specific land cover types than past maps. The Rio Santa catchment, Peru, is a catchment with various land cover types ranging from …
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Modeling Sex-Specific Seasonal Habitat Selection for Elk (Cervus Elaphus) in Central Washington
… index (NDVI) in forested and semi desert land cover types. During summer, females selected gentler slopes than males, and with primarily southwest aspects, also at high elevations near water sources and roads in forest and semi desert cover types. Females differed from males in referring …
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Identifying Biophysical Drivers of Evapotranspiration for Forest Cover in a Mountainous Region
… understanding the impacts of climate change and land-use/land-cover change on water availability, ecosystem health, and agricultural productivity. However, point-based, field-measured ET data often lacks sufficient spatial and temporal coverage, especially in complex mountainous terrains such as …
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Weighting Landsat Digital Data According to Land Cover Emissivity for Surface Temperature Mapping
… require efficient and accurate data concerning land use/land cover and temperature gradients for informed decision making. Remotely-sensed data provide a method for acquiring such information in a dependable and efficient manner. Regular data acquisition and a synoptic view make the Landsat …
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Use of GIS and Remote Sensing Technologies to Study Habitat Requirements of Ocelots, Leopardus pardalis, in south Texas
… 1991 and August 2000 were classified into four land cover types: closed canopy, open canopy, water, and urban/barren. These classified images were converted into digital thematic maps for use in resource utilization studies and modeling. Location estimates (762 from 1991 and 406 from 2000) were …
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Analysis of the One-Horned Rhinoceros (Rhinoceros Unicornis) Habitat in the Royal Chitwan National Park, Nepal.
… Chitwan National Park of Nepal. An April 2003 Landsat image was classified into eight land cover types: wetland, sand, water, mixed forest, sal forest, agriculture, settlement, and grassland. This image was converted into habitat suitability maps using cover, food, and water. The rhinoceros …
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Historical Land Cover Impacts on Water Quality in the Provo River Watershed, 1975 - 2002
The Provo River watershed has experienced land cover change over the past several decades. Land cover influences water quality inasmuch as land cover determines the type and quantity of non-point source (NPS) pollutants that may enter the water. This study examines the historical impacts of land …
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Quantitative rice mapping with remote sensing image time series
… correction is performed adaptively for different land cover types. In this way the unique bidirectional reflection property of each land cover type is accommodated. To separate cropping lands from other land cover types, an efficient sequential classifier training approach, SCT-SVM, is developed. …
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Comparing mosquito communities of various patch-matrix landscape combinations in central Missouri, with implications for developing models to forecast abundances of important mosquito taxa
… densities, combined with their relationship to landscape characters, will clearly affect the proliferation of arboviruses to humans present in these landscapes. Advanced mapping techniques (e.g., GPS, land cover surveys) allow for the characterization of specific locations with regard to …
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THE INFLUENCE OF SEASON, FLOW REGIME, AND WATERSHED LAND USE AND LAND COVER ON NUTRIENT DELIVERY TO TWO RAPIDLY URBANIZING WATERSHEDS IN CENTRAL INDIANA, USA
… temperate stream geochemistry and watershed land cover in two temperate streams, Fishback Creek and School Branch Creek, located in a rapidly urbanizing area on the northwest side of Indianapolis in Eagle Creek Watershed, Indiana. The temporal and spatial patterns of NO3-N, PO4, DOC, SiO2, …
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Development of Effective Procedures for Stormwater Thermal Pollution Potential Risk Mapping
… potential (TPP) through and analysis of land cover types and runoff flow patterns in a geographic information system (GIS) environment. Results of the study provide a theoretical foundation for TPP risk mapping with recommendations for authorities interested in pursuing TPP risk mapping …
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Examining Land Use/Land Cover Change and Potential Causal Factors in the Context of Climate Change in Sagarmatha National Park, Nepal
… growing tourism and global warming, the fragile landscape of the Himalayas is under immense pressure because of rapid land cover changes in developing countries like Nepal. Remotely sensed data combined with ethnographic knowledge are useful tools for studying such changes. The quantitative …
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Patterns of Taxonomic, Functional, and Phylogenetic Diversity, and Ecological Drivers of Stream Fish Assemblages in East Texas
… (e.g., stream order, wetted width, different land cover types). The ecological niche model created using random forest algorithms outperformed the maximum entropy approach, and factors related to channel morphology (e.g., stream order, slope) and land cover type (e.g., agriculture) were …
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Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009
Aerial photographs of nine peatlands along the Rocky Mountain Front, Montana, were analyzed in a GIS. The boundary of wetland extent was hand-digitized and the area within was classified into land-cover types including: total area, open fen, open water, woody vegetation, and …
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Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009
Aerial photographs of nine peatlands along the Rocky Mountain Front, Montana, were analyzed in a GIS. The boundary of wetland extent was hand-digitized and the area within was classified into land-cover types including: total area, open fen, open water, woody vegetation, and …
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