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 20 for “"Vegetation mapping"”.
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Remote sensing applications in vegetation mapping with special reference to the Langebaan area, South Africa
… as a procedure used during the process of vegetation mapping has developed from a purely visual process of image identification to one which can utilize computerised methods to aid consistent identification of vast quantities of digitally stored/recorded spectral information. A description …
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The development of a Geographic information system for environmental monitoring on the Cape Peninsula, and an assessment of the use of spot imagery for vegetation mapping
This thesis concerns the establishment of a Geographic Information System for the Cape Peninsula and the use of SPOT satellite imagery to map land cover classes. The former is seen as a necessary tool to promote judicious conservation management decisions for the fragile "Fynbos" ecosystem, and the …
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The use of digitally interpreted satellite imagery, with special reference to topographical shadow effects, as an aid to vegetation mapping in the Hottentots Holland Mountain catchment area of the Western Cape Province
… for extracting information, relating to vegetation, from digital imagery. The effect of topographic shadow on the imagery is explained and a short discussion of mountain fynbos, the natural vegetation of the mountains of the Western Cape Province of South Africa, is included. The report …
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Monitoring vegetation dynamics in Zhongwei, an arid city of Northwest China
… China to quantify the urbanization and revegetation processes (1990-2011) through a unified sub-pixel measure of vegetation cover. Research strategies included: (1) Conduct sub-pixel vegetation mapping (1990, 1996, 2004, and 2011) with Random Forest (RF) algorithm by integrating high …
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The planning of a South African airborne synthetic aperture radar measuring campaign
… remote sensing with applications in subsurface mapping, surface moisture mapping, vegetation mapping, rock type discrimination and Digital Elevation Modelling. Since these applications have considerable scientific and economic benefits, the Radar Remote Sensing Group at the University of Cape …
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Vegetation gradients in Southern Cape mountains
… This study arose from the need to define local vegetation patterns and their interdependence with animal life, climate and soil as a necessary prerequisite to vegetation mapping and Fynbos is part of the diverse and complex Cape Floral Kingdom. Field taxonomy in fynbos is often problematic for …
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Wildlife Habitat in the James River Valley, South Dakota
… in north-eastern South Dakota. Included were vegetation mapping, small mammal trapping, waterfowl breeding pair counts, waterfowl brood counts, bird census routes, and general observations. Natural vegetation consisted of 3181 ha of grassland, 2002 ha of woodland, 1115 ha of savannah, and 392 …
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Machine learning for automatic classification of remotely sensed data
… data. While this was developed in the context of vegetation mapping from remotely sensed data using machine learning classifiers, it is a general technique that can be applied to any domain. The emphasis of the applicability for this framework being domains that have inadequate training data …
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Linking groundwater level fluctuations and water quality to vegetation and habitat condition in blanket bog ecosystems in Ireland
… were revealed to be a major factor explaining vegetation patterns. Blanket bog vegetation was linked to hydrological regimes (water table fluctuations). Total organic carbon (TOC) results suggesting flushing of organic carbon from the peat with precipitation after prolonged drought. Effects of …
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Connecting the dots: Remote sensing of Glossy and Common Buckthorn (Frangula alnus and Rhamnus cathartica) in the Oak Openings Region of Northwest Ohio
… Region of NW Ohio. Conventional techniques of vegetation mapping are expensive and time-consuming. Thickets were identified using remotely sensed land surface phenology of buckthorn, that leafs out earlier and senesces later than native plant species. A tasseled-cap greenness index, which …
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A multi-scaled approach to vegetation and landscape assessment in the Barents region: Reindeer habitat in a climate of change
… This research develops new botanical and spatial vegetation data for a much understudied region, increases understanding of the landscape and its relationships to reindeer habitat and climate change through multi-scale assessments, and creates the potential for analysing consequences of change. …
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Applications of aerial imagery in identification of natural areas
1 PDF file (vii, 82 pages)
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The Use of Remote Sensing to Map and Monitor Coastal Dune Vegetation Change at Southampton, Ontario, Canada
… complex provides habitat for a diverse range of vegetation species, some of which are endemic, rare, and threatened. This research mapped and monitored dune vegetation change at the Chantry Dune system from 2005-2012 using multi-temporal normalized difference vegetation index (NDVI) images …
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Vegetation survey of Namibia: conceptualisation and implementation of a nation-wide vegetation survey serving practical land management needs
The global human population is dependant on a variety of plant-based ecosystem services for its well-being, even for its very existence. The well-being, in fact, the very existence of man is dependant upon plant-based ecosystem services. Typical services derived from ecosystems encompass food …
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Patterns of plant species richness and diversity across two habitat types in the Upper Karoo, South Africa
… and community structure to broader-scale vegetation mapping in the Karoo regions. It also investigated the role of several environmental and climatic variables as drivers of species richness, relative cover, and growth form diversity in two habitat types (i.e. plains and rocky dolerite …
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Mapping and assessing ecosystem threat status of South African kelp forests
… This study sought to develop a modern method for mapping South African kelp forests to update previous maps developed in the mid-2000s. The novel approach extracts the Vegetation Index from kelp forests using advanced multi-resolution Sentinel-2 (A and B) satellite imagery. Using Geographic …
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Evaluation Of Selected Spectral Vegetation Indices In Senescent Rangeland Canopy Using Landsat Imagery
… species depends on the amount of nonproductive vegetation (NPV). To estimate NPV land managers are currently using the Robel pole visual obstruction reading methods. Researchers with the USDA Agricultural Research Service's (ARS) Northern Great Plains Research Laboratory in Mandan, ND, recently …
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Analysis of the One-Horned Rhinoceros (Rhinoceros Unicornis) Habitat in the Royal Chitwan National Park, Nepal.
This study analyzes the remaining suitable habitat of the one-horned rhinoceros, Rhinoceros unicornis, in Royal 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 …
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Consequences of climate change on the high mountain vegetation of mount Etna [Conseguenze dei cambiamenti climatici sulla vegetazione altomontana del vulcano Etna]
Gli ecosistemi altomontani sono tra i più vulnerabili ai cambiamenti climatici globali, e la vegetazione risponde attraverso spostamenti altitudinali, modifiche nella struttura delle comunità e variazioni nella biodiversità. Questo studio indaga le dinamiche ecologiche a lungo termine delle …