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dc.contributor.authorMirik, Mustafa
dc.contributor.authorSteddom, Karl
dc.contributor.authorMichels, Gerald L.
dc.date.accessioned2020-09-18T03:37:27Z
dc.date.available2020-09-18T03:37:27Z
dc.date.issued2006-01-01
dc.identifier.citationMirik, M., Steddom, K., & Michels, G. J. (2006). Estimating biophysical characteristics of musk thistle (Carduus nutans) with three remote sensing instruments. Rangeland Ecology & Management, 59(1), 44-54.
dc.identifier.issn0022-409X
dc.identifier.doi10.2111/05-106R2.1
dc.identifier.urihttp://hdl.handle.net/10150/643403
dc.description.abstractIdentifying the dynamics and extent of noxious weeds in a spatial and temporal context improves monitoring, planning, and management practices. Musk thistle (Carduus nutans L.), a noxious weed, is a good candidate for detection by remote sensing platforms because it may produce a unique spectral signature due to a large, purple-red flower head. Therefore, 3 remote sensing instruments—a ground hyperspectral spectrometer, a multispectral ground radiometer, and an airborne hyperspectral imaging spectrometer—were used to establish regression models between reflected data and the biophysical parameters (density, height, flower head density, and percent ground cover) of musk thistle. The coefficients of determination (R2) obtained from simple regression models for vegetation indices and musk thistle biophysical variables ranged from 0.46 to 0.77. Multiple regression models with up to 3 variables increased R2 by an average of 0.07. This study indicated that normalized difference and simple ratio indices can be used for specific applications such as detection of musk thistle biophysical variables in rangelands. Once applied to the image, these results will produce a map of parameters that can be used to determine the size of infestation and the reduction in rangeland productivity. 
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjecthyperspectral imaging spectrometer
dc.subjectinvasive plants
dc.subjectnoxious weeds
dc.subjectremote sensing
dc.subjectvegetation indices
dc.titleEstimating Biophysical Characteristics of Musk Thistle (Carduus nutans) With Three Remote Sensing Instruments
dc.typetext
dc.typeArticle
dc.identifier.journalRangeland Ecology & Management
dc.description.collectioninformationThe Rangeland Ecology & Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.description.admin-noteLegacy DOIs that must be preserved: 10.2458/azu_jrm_v59i1_mirik
dc.source.volume59
dc.source.issue1
dc.source.beginpage44-54
refterms.dateFOA2020-09-18T03:37:27Z


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