Normalized Burn Ratio (NBR) and Normalized Difference Vegetation Index (NDVI) Study of Vegetation Health and Regrowth Rate Post 2018 Mendocino Complex Fire in Northern California Coastal Mountains
Issue Date
2022Keywords
Normalized Burn RatioNormalized Differenced Vegetation Index
Differenced Normalized Burn Ratio
Advisor
Korgaonkar, YogaMetadata
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The University of Arizona.Rights
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.Collection Information
This item is part of the MS-GIST Master's Reports collection. For more information about items in this collection, please contact the UA Campus Repository at repository@u.library.arizona.edu.Abstract
The Mendocino Complex fire burned for two months from July 27th 2018 to September 18th 2018. The Mendocino Complex fire comprised of two fires: the River and the Ranch fire. Both wildfires burned 459,136 acres of the Mendocino National Forest in the Northern Coast Range of northwestern California. This study tries to measure the impacts and understand the forest structure and recovery through the use of Landsat 8 imagery to analyze Normalized Burn Ratio (NBR), Normalized Difference Vegetation Index (NDVI). NDVI is calculated to understand the impacts to the vegetation health and was studied to understand which index would provide the best results for the study area. The NBR was calculated to understand the overall burn severity in the study area. To understand the impact to the specific types of vegetation, 50 evenly distributed control points were established across the five dominant vegetation types that make up 95% of the study area. There is a positive correlation between the dNBR and dNDVI with an R² of 0.8635. The dNBR indicated that the vast majority of the burn area was a low to moderate severity burn. Post fire NBR and NDVI showed that over the five vegetation types shrubland observed the highest post fire loss in terms of reflectance values, -122.75% and -78.67% respectively. May 28, 2020 NDVI showed the largest increase of NDVI values across all control points with an average of 0.228 up from 0.117 for a 95% increase from one month post fire in 2018, thus proving that the forest is in its early stages of recovery.Type
Electronic Reporttext
Degree Name
M.S.Degree Level
mastersDegree Program
Geographic Information Systems TechnologyDegree Grantor
University of ArizonaCollections
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