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An Error Analysis of the Photographic Technique for Measuring Percent Vegetative Cover
Author(s) -
Lee Williams T. H.
Publication year - 1979
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1979.03615995004300030029x
Subject(s) - cover (algebra) , canopy , remote sensing , simplicity , overhead (engineering) , simple (philosophy) , field (mathematics) , environmental science , mathematics , computer science , geology , geography , engineering , physics , archaeology , mechanical engineering , philosophy , epistemology , quantum mechanics , operating system , pure mathematics
A vertical overhead ground photographic technique was developed to determine percent vegetative ground cover. Acquisition of the photographs is rapid and simple and the technique is well suited to situations where simplicity and speed in the field are necessary. A vegetative canopy model was used to derive a measure of the errors inherent in the technique. The degree of error is related to the canopy structure and is at a minimum in dense canopies.