Effects of data types on vegetation boundary delineation
1997
Fortin, M.J.
With sampled field data, the estimation of vegetation boundary location and width are related to the types of data used: measurements and species assemblages. The present study uses an edge detection algorithm for two-dimensional sampled data, to investigate how consistent are vegetation boundary locations when delineated using different data sets. i.e., different types of measurements (density, percent coverage, and presence-absence) and species assemblages (trees and shrubs together, trees only, and shrubs only). Overlap statistics are used to quantify the degree of spatial agreement between delineated boundaries based on different vegetation data sets. Using woodland data, the boundaries of trees and shrubs based on the three types of measurements (density, percent coverage, and presence-absence) overlap significantly; however, a significant spatial lag exists between the boundaries based only on trees and those based on shrubs alone.
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