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dc.contributor.authorHeer, Richard C.
dc.date.accessioned2019-10-10T19:11:47Z
dc.date.available2019-10-10T19:11:47Z
dc.date.issued1986
dc.identifier.urihttp://hdl.handle.net/10919/94464
dc.description.abstractThe potential for using large scale, small format aerial photography to obtain seedling density and woody competition information was investigated. Factors affecting photo interpretation of seedlings were examined and equations to predict seedling density and woody competition levels were developed and evaluated. Two scales of imagery, 1:4000 and 1:6000 were considered to compare their relative merits for these purposes. Greater age of the seedlings and their inherent development generally served to improve photo interpretation. The amount of woody competition present in the plots tended to hinder seedling identification at the 1:4000 scale, while enhancing it when 1:6000 scale data was used. Seedling density estimation and evaluation of competition through Free-To-Grow classification predictions yielded results comparable to ground surveys. Estimation of total groundline basal area in all woody competition, and classification of the plots by the amount of hard-to-control competition they contained, were less successful. These results may have been due in part to the partial leaf fall that occurred prior to obtaining the imagery. Many of the results found in this study favored the larger scale (1:4000) imagery, and its use for the procedures described is recommended.en
dc.format.extentviii, 105 leaves
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherVirginia Polytechnic Institute and State University
dc.rightsThe authors of the theses and dissertations are the copyright owners. Virginia Techs Digital Library and Archives has their permission to store and provide access to these works.
dc.subject.lccLD5655.V855 1986.H447
dc.subject.lcshVegetation mapping
dc.subject.lcshSeedlings
dc.subject.lcshAerial photography in forestry
dc.titleEstimation of seedling density and evaluation of woody competition in young loblolly pine plantations using 35mm color aerial photography
dc.typeThesis
dc.contributor.departmentForestry
dc.description.degreeM.S.
dc.identifier.oclc15183375
thesis.degree.nameM.S.
thesis.degree.levelmasters
thesis.degree.grantorVirginia Polytechnic Institute and State University
thesis.degree.disciplineForestry
dc.type.dcmitypeText


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