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 238 for “"NDVI"”.
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Mezőgazdasági táblák talajheterogenitás vizsgálata Sentinel 2 NDVI adatok felhasználásával
… készítettem növényi vegetációs index (NDVI) képeket. A térinformatikai adatbázis adataiból „Attribute based clustering” modulját felhasználva 40x futtatott k-közép (k-mean) eljárással három csoportot (klasztert) képeztünk az adatokból. Az NDVI értékek középérték összehasonlítását …
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A Phenological Comparison of NDVI Products within Contiguous United States
… 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 a single …
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Remote sensing, normalized difference vegetation index (NDVI), and crop yield forecasting
… 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 regression analysis, the thesis identified …
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Using artificial intelligence to predict NDVI/NDRE from standard RGB aerial imagery
The student, Corey Davidson, submitted this Thesis for approval on 2021-07-05 at 17:13.
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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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A drón alapú NDVI és a kukoricatermés kapcsolatának vizsgálata gépi tanulás modellel kisparcellás kísérletben
… öt időpontban készült vegetációs indexek (NDVI) alapján látható volt, hogy a talajművelés, trágyázás és időpontok szignifikánsan befolyásolták a növényállományt. Az NDVI alapú becslés jól követte a tényleges hozamot, ami alátámasztja a távérzékelés megbízhatóságát a termés előrejelzésében.
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Prévision de la production nationale d’arachide au Sénégal à partir du modèle agrométéorologique AMS et du NDVI
… of the agrometeorological model AgroMetShell, NDVI data and other meteorological data. This study which is one first approach in groundnut’s yield forecasting, shows the relation between yield and the explanatory variables at the third decade of October provide a best forecast of the yield of …
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An analysis of vegetation pattern and its relationship to NDVI data in the Namaqualand area, South Africa
… used the normalised difference vegetation index (NDVI) to relate biomass to altitude, rainfall and vegetation type. Each vegetation type in the area had a unique temporal signature and the climatic variables influencing the summer rainfall and winter rainfall vegetation types differed …
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Reconstructing NDVI Time Series from Landsat and MODIS and Developing a Species-Specific Validation Dataset for Vegetation Classification in Frontenac Provincial Park
… Park (FPP). SOS was analyzed from MODIS-derived NDVI (2000-2023) and a gap-filled Landsat (1988-2018) time series, each with distinct workflows but using a 0.7 NDVI threshold. R package phenofit was applied to gap-fill the MODIS timeseries, while Landsat was processed independently to identify …
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USING LANDSAT IMAGERY TO EVALUATE LANDSCAPE-LEVEL IMPACTS OF NATURAL GAS FIELD DEVELOPMENT: TAZOVSKY PENNINSULA, RUSSIA, 1984-2007
… fragmentation analysis, mean and change in mean NDVI analyses, and a cross-tabulation analysis. These analyses show that the tundra has become increasingly fragmented during the study period, and that mean NDVI values in areas adjacent to development are lower than those calculated for …
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USING LANDSAT IMAGERY TO EVALUATE LANDSCAPE-LEVEL IMPACTS OF NATURAL GAS FIELD DEVELOPMENT: TAZOVSKY PENNINSULA, RUSSIA, 1984-2007
… fragmentation analysis, mean and change in mean NDVI analyses, and a cross-tabulation analysis. These analyses show that the tundra has become increasingly fragmented during the study period, and that mean NDVI values in areas adjacent to development are lower than those calculated for …
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Identifying Forest Conversion Hotspots in the Commonwealth of Virginia using Multitemporal Landsat Data and Known Change Indicators
… 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 stacked by year for the years 1995-2011 and …
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Quantifying the Diversity of Agronomic Traits of Cicer Milkvetch (Astragalus cicer L.) Germplasm Collections Using UAV-Based Imagery
… and plant area scores, and the UAV-based traits NDVI green area and NDVI canopy volume. The first forage harvest occurred in late June and the stockpile harvest in mid-October. Excluding leaf number per stem (first harvest) and plant area (stockpile harvest), significant differences (p<0.05) were …
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Improved leaf area index estimation by considering both temporal and spatial variations
… produced Normalized Difference Vegetation Index (NDVI) products. However, the accuracy from LAI-VI relationships greatly varies due to many factors, including temporal and spatial variations in LAI and a selected VI. In addition, NDVI products derived from various sensors have demonstrated …
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Remote Sensing of Vegetation Change Across a Latitudinal Gradient in the Canadian Arctic
… as the Normalized Difference Vegetation Index (NDVI) to map and monitor vegetation change (e.g., phenology, greening, percent cover, and biomass) over time. It is important to document how Arctic vegetation is changing, as it will have large implications related to global carbon and surface …
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Multi-scale Remote Assessment of Phenology of Photosynthesis and Productivity of Northern Forests
… like the normalized difference vegetation index (NDVI) which is sensitive to chlorophyll content, are often limited in monitoring the phenology of evergreen conifers due to the retention of green foliage year-round. Therefore, the main goal of my thesis is to evaluate the ability of carotenoid …
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Remote Sensing Methods To Classify a Desert Wetland
… second significant (P<0.01) factor controlling NDVI was flow rate of agricultural drain water from the U.S. into the marsh. Reduced summer flows in 2001 due to canal repairs, and in 2010 during the YDP test run, produced the two lowest NDVI values of the time series from 2000 to 2011 (P<0.05). …
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An Evaluation of Unmanned Aircraft Systems' Ability to Assess Stripe Rust in Large Wheat Breeding Nursies
… (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 and NDVI) was explored. We evaluated a panel of 13 …
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Eastern Deciduous Forest Phenology and Vegetative Vigor Trends From 2000 to 2013, Mammoth Cave National Park, KY
… 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 methods were employed to examine the …
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