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 15 of 15 for “"National Land Cover Database (NLCD)"”.
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Land Use and Land Cover Change in the Crown of the Continent Ecosystem, Montana, USA from 1992-2011
In recent decades land use and land cover change (LULCC) has occurred throughout the Intermountain West. The Crown of the Continent Ecosystem (CCE) extends along the Rocky Mountains adjacent to the Canada-U.S. International border. In the U.S. portion of the CCE, located in northwestern Montana, …
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Detecting Impervious Cover with Artificial Lighting in Astronaut Photography from the International Space Station
Impervious cover continues to pose a threat to flood-prone regions, especially the ones in dense urban areas. Mapping the location of impervious surface becomes vital to properly managing drainage and runoff in a city, along with the health of fluvial ecosystems. Kotarba and Aleksandrowicz, in …
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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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Fynbos connectivity as a function of dispersal distance and the implications for bird conservation in the greater Cape Town area
Connectivity is defined as the degree to which a landscape facilitates an organisms' movement. It is considered a vital element of landscape structure with key implications for metapopulation survival and ecological processes such as pollination. The connectivity of a landscape changes depending on …
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Land Cover Quantification using Autoencoder based Unsupervised Deep Learning
… work aims to develop a deep learning model for land cover quantification through hyperspectral unmixing using an unsupervised autoencoder. Land cover identification and classification is instrumental in urban planning, environmental monitoring and land management. With the technological …
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Relationships between Forest Productivity and Water Yield Across Virginia's Forests
Landowners and managers are often incentivized solely for maximized forest productivity (i.e., increasing biomass or carbon); however, maximizing forest productivity can result in a decline in downstream water resources, highlighting the need for a better understanding of such tradeoffs to inform …
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Evaluating time-series smoothing algorithms for multi-temporal land cover classification
… algorithms in noise reduction for improving land cover classification in the Great Lakes Basin, and providing groundwork to support cyanobacteria and cyanotoxin monitoring efforts. We used inter-class separability and intra-class variability, at varying levels of pixel homogeneity, to …
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Examining Avian Communities in Wetlands at Multiple Spatial Extents
Destruction and impairment of wetlands has been extensive throughout the conterminous United States, resulting in the loss of both crucial ecosystem functions and productive habitat for a wide variety of organisms. Over the last few decades, efforts to protect, restore, and create wetlands have led …
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Characterizing Impacts of and Recovery from Surface Coal Mining in Appalachian Forested Landscapes Using Landsat Imagery
… research investigating the potential for using Landsat data to identify and characterize woody canopy cover on reclaimed coal-mined lands through three separate studies. The objective of the first study was to assess whether surface coal mines in the forested central Appalachian regions of the …
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A method for identifying commission and omission errors for cultivated crops in the national land cover dataset (NLCD) 2006
<p>The United States National Land Cover Database (NLCD), developed from the early 1990s to 2006, is an important resource for monitoring the nation’s land cover change. In this research, I developed a method that identifies and analyzes the commission and omission errors for two agricultural …
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Assessing annual urban change and its impacts on evapotranspiration
Land Use Land Cover Change (LULCC) is a major component of global environmental change, which could result in huge impacts on biodiversity, water yield and quality, climate, soil condition, food security and human welfare. Of all the LULCC types, urbanization is considered to be the most impactful …
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Trends in Forest Recovery After Stand-Replacing Disturbance: A Spatiotemporal Evaluation of Productivity in Southeastern Pine Forests
… approximately 100 million ha of forest land, about 87% of which is privately owned. Any alteration in this region's duration or rate of forest recovery has consequential economic and ecological ramifications. Despite the need for forest recovery monitoring in this region, a spatially …
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Forest Change Dynamics Across Levels of Urbanization in the Eastern US
… and apply techniques for Big Data exploration of Landsat satellite images for forest cover analysis over large regions. Results demonstrate that forest change at the micropolitan level of urbanization differs from rural and metropolitan forest dynamics. The work highlights the dynamic nature of …
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Geospatial Assessment of Port Infrastructure and Computational Modeling of Coastal Disasters
… commodities through that country and even internationally. If a natural disaster were to strike a port that was not properly prepared, the port would not only suffer, but the commodities that transported through there would be affected as well. The major motivation for this thesis was to address …
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Heterogeneous Nitrogen Losses: Cost-Effectiveness Analysis of Changes in Management Across South Dakota
… be altered. Findings from this study will aid land grant extension personnel in targeting educational programs to areas where it is cost effective to enhance sustainable agriculture and mitigate GHG emissions from nitrogen fertilizer application. Results of the study will also inform …