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 83 for “"Normalized Difference Vegetation Index (NDVI)"”.
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Remote sensing, normalized difference vegetation index (NDVI), and crop yield forecasting
… remotely sensed image and its derived products, Normalized Difference Vegetation Index (NDVI), to assess and quantify corn and soybean yield potential. Fixed-effect panel and ordinary least squares NDVI regression models were developed for different level of spatial aggregation. Through the …
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Relationship between satellite-derived Normalized Difference Vegetation Index (NDVI) and surface hydrology
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Detection and attribution of drought and oil-induced plant stress using hyperspectral remote sensing
… remote sensing in detecting stress in vegetation caused by both drought stress and hydrocarbon contamination of the soil. Spectral and plant biochemical measurements were taken from an in-situ field experiment and a glasshouse experiment at the James Hutton Institute, Invergowrie, U.K. …
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Multispectral Remote Sensing of the Earth and Environment Using KHawk Unmanned Aircraft Systems
… (NIR) and colored infrared (CIR) maps. A robust Normalized Difference Vegetation index (NDVI) calibration procedure is proposed and validated by ground tests and KHawk flight test. Finally, the generated aerial maps and their corresponding Digital Elevation Models (DEMs) are used for typical …
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An Evaluation of Unmanned Aircraft Systems' Ability to Assess Stripe Rust in Large Wheat Breeding Nursies
… and remotely using the dark green color index (DGCI), normalized difference vegetation index (NDVI) and blue NDVI. Significant relationships (p</p> <p>In a second study, the effect of plot size (single-row, two-row and four-row) on relationship between visual and remote sensing data (DGCI …
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Spectral Properties of Sugar Beet Canopy Related to Sugar Content and Quality of Beet Roots
… amino nitrates are statistically significant, to normalized difference vegetation index (NDVI) and spectral information from several individual bands. Using these results, a simple linear regression and multiple linear regression were performed to derive estimate models for sugar content and other …
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Mapping urban growth and investigating its potential impact on surface water quality in Chattanooga, Tennessee using GIS and remote sensing
… A model was developed utilizing the Normalized Difference Vegetation Index (NDVI) and a supervised image classification algorithm to detect IS growth. The changes in IS were quantified at watershed level scale including stream riparian areas. The obtained results show a net growth of …
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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
… Mapper (TM) images since 1972 were used. Normalized Difference Vegetation Index (NDVI) was calculated for different elevation classes and land cover types. These measurements, along with land cover change (1992- 2006) analysis, shows a significant conversion of the areas covered by ice, …
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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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Identifying Forest Conversion Hotspots in the Commonwealth of Virginia using Multitemporal Landsat Data and Known Change Indicators
… study examines the effectiveness of using the Normalized Difference Vegetation Index (NDVI) derived from 1326 different Landsat Thematic Mapper and Enhanced Thematic Mapper images in finding isolated housing starts within the Commonwealth of Virginia's forests. Individual NDVI images were …
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Multispectral canopy reflectance and digital imaging to determine maturity
… 5 – planted at two or three planting dates (PD). Normalized difference vegetation index (NDVI), normalized difference red edge (NDRE), dark green color index (DGCI), percent canopy cover, and developmental stage were assessed every 7-10 days. Canopy cover and NDVI reached maximum values relatively …
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A Phenological Comparison of NDVI Products within Contiguous United States
This study computed the Normalized Difference Vegetation Index (NDVI) products derived from NOAA AVHRR, MODIS, and SPOT VGT sensors. NDVI products from different instruments vary in spatial resolution, temporal coverage and spectral range. As a result, multi-sensor NDVI products are rarely used in …
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Eastern Deciduous Forest Phenology and Vegetative Vigor Trends From 2000 to 2013, Mammoth Cave National Park, KY
… for forests in central Kentucky. Using a Normalized Difference Vegetation Index (NDVI) calculated from MODerate-Resolution Imaging Spectroradiometer (MODIS) instrument data, the photosynthetic activity of vegetation at Mammoth Cave National Park (MACA) is tracked from 2000 to 2013. Three …
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Classification of Plot-Level Fire-Caused Tree Mortality in a Redwood Forest Using Digital Orthophotography and Lidar
… predictor variable of those considered, the Normalized Difference Vegetation Index (NDVI) calculated from 2010 National Agricultural Imagery Program (NAIP) aerial imagery, with shadowed pixel values adjusted, and non-canopy pixels removed. The second used the same NDVI in combination with …
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Understanding Carbon Uptake Using Multi-Scale Novel Remote Sensing Techniques
… can be used to monitor multiple aspects of vegetation dynamics as well as its sensitivity to climate to improve dryland carbon uptake estimations. The thesis integrated existing cutting-edge remote sensing proxies to reduce uncertainties in dryland carbon uptake estimations from global to …
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Sensitivity Analysis of Hot/Cold Pixel Selection in SEBAL Model for ET Estimation
… pixel selection based on land cover map, normalized difference vegetation index (NDVI) map, and land surface temperature (LST) map. Various combinations of hot/cold pixels were automatically selected along the LST gradient. The LE estimations were then validated against ground-based eddy …
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Improving Early Season Sidedress Nitrogen Rate Prescriptions for Corn
… surface crop residues, and sensor orientation on normalized difference vegetation index (NDVI) readings from corn from planting through the V6 growth stage; and ii) evaluate the effect of sensor orientation and field of view at early corn growth stages on the relationship between NDVI and corn …
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Monitoring Property Boundaries for the Appalachian National Scenic Trail Using Satellite Images
… detection algorithms. Using Landsat TM images, Normalized Difference Vegetation Index (NDVI), and image difference change detection, this research shows that major boundary encroachments can be detected. Detection of sub-pixel vegetation index decreases identifies specific locations for field …
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Modeling Sex-Specific Seasonal Habitat Selection for Elk (Cervus Elaphus) in Central Washington
… near water sources and roads. They selected vegetation with high photosynthetic activity modeled using a normalized difference vegetation index (NDVI) in forested and semi desert land cover types. During summer, females selected gentler slopes than males, and with primarily southwest aspects, …
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Green space, blue space, & neonatal health: exploring the relationship between environmental factors & birth outcomes in New York City
… statistics birth records for the year 2000. The Normalized Difference Vegetation Index (NDVI), the 2005-2006 NYC Street Tree Census, and access to major green spaces act as measures of residential greenness, while proximity to publicly accessible waterfront areas represents access to blue space. …
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