Show simple item record

dc.contributor.authorKruskamp, Nicholas
dc.date.accessioned2014-03-04T20:03:06Z
dc.date.available2014-03-04T20:03:06Z
dc.date.issued2011-08
dc.identifier.otherkruskamp_nicholas_201108_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/kruskamp_nicholas_201108_ms
dc.identifier.urihttp://hdl.handle.net/10724/27498
dc.description.abstractLiDAR data are used to detect hemlock (Tsuga canadensis) defoliation due to hemlock woolly adelgid (Adelges tsugae) (HWA) in the Chattahoochee National Forest (CNF) located in Georgia. LiDAR data are used to quantify leaf area index (LAI) and fractional cover (fCover). Traditional field methods are used to validate LiDAR results with hemispherical photography of stands in varying stages of decline. Single linear regression results suggest that LAI (R2 = 0.4355) and fCover (R2 = 0.4597) are not well predicted from LiDAR. Multivariate principal component analysis using LiDAR variables and multivariate stepwise regression with ground data improve results for LAI (R2 = 0.7307) and fCover (R2 = 0.4666). Multivariate cluster analysis finds a significant relationship between ground and LiDAR derived clusters of high, medium, and low defoliation with 75% cluster agreement in classification of defoliation. This suggests that 3 health status ranks can be created from remote data.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectLiDAR
dc.subjecthemlock
dc.subjectremote sensing
dc.subjectforest canopy
dc.subjectleaf area index
dc.subjectfractional cover
dc.subjectdefoliation
dc.subjecthemlock woolly adelgid
dc.titleLiDAR detection of defoliation in eastern hemlock due to hemlock woolly adelgid
dc.typeThesis
dc.description.degreeMS
dc.description.departmentGeography
dc.description.majorGeography
dc.description.advisorMarguerite Madden
dc.description.committeeMarguerite Madden
dc.description.committeeThomas Jordan
dc.description.committeeJeffrey A. Hepinstall


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record