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Evaluating the potential of the Normalized Burn Ratio and other spectral indices for assessment of fire severity in Alaskan Black Spruce forests.

dc.contributor.advisorKasischke, Eric S.en_US
dc.contributor.authorHoy, Elizabeth Emburyen_US
dc.date.accessioned2007-06-22T05:38:25Z
dc.date.available2007-06-22T05:38:25Z
dc.date.issued2007-05-04
dc.identifier.urihttp://hdl.handle.net/1903/6960
dc.description.abstractThis thesis presents an assessment of the potential of the differenced Normalized Burn Ratio (dNBR) and other spectral indices for mapping fire severity in Alaskan black. Using simple linear regression, the dNBR derived from Landsat TM and ETM+ data was correlated with ground measures of fire severity including the Composite Burn Index (CBI), depth of the organic soil remaining after the fire, reduction in the depth of the organic layer, and Canopy Fire Severity Index; these being measures of fire severity used to assess the ecological effects of fire. Regression analyses yielded weak correlations: the highest R2 for a comparison between the dNBR and CBI was 0.52, p<0.0001. However, the mid-infrared ratio showed higher potential than other spectral indices in many comparisons. Overall, these results indicate 1) validation of the dNBR is needed and 2) burn severity mapping schemes which are more comprehensive than the dNBR should be developed.en_US
dc.format.extent1162754 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleEvaluating the potential of the Normalized Burn Ratio and other spectral indices for assessment of fire severity in Alaskan Black Spruce forests.en_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentGeographyen_US
dc.subject.pqcontrolledRemote Sensingen_US
dc.subject.pqcontrolledGeographyen_US
dc.subject.pquncontrolledspectral indexen_US
dc.subject.pquncontrollednormalized burn ratioen_US
dc.subject.pquncontrolledborealen_US


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