A factor analysis of landscape pattern and structure metrics |
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Authors: | K H Riitters R V O'Neill C T Hunsaker J D Wickham D H Yankee S P Timmins K B Jones B L Jackson |
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Institution: | (1) Tennessee Valley Authority, 37828 Norris, TN, USA;(2) Oak Ridge National Laboratory, 37831 Oak Ridge, TN, USA;(3) Desert Research Institute, 89512 Reno, NV, USA;(4) Analysas Corporation, 37830 Oak Ridge, TN, USA;(5) Environmental Protection Agency, 89193 Las Vegas, NV, USA |
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Abstract: | Fifty-five metrics of landscape pattern and structure were calculated for 85 maps of land use and land cover. A multivariate factor analysis was used to identify the common axes (or dimensions) of pattern and structure which were measured by a reduced set of 26 metrics. The first six factors explained about 87% of the variation in the 26 landscape metrics. These factors were interpreted as composite measures of average patch compaction, overall image texture, average patch shape, patch perimeter-area scaling, number of attribute classes, and large-patch density-area scaling. We suggest that these factors can be represented in a simpler way by six univariate metrics - average perimeter-area ratio, contagion, standardized patch shape, patch perimeter-area scaling, number of attribute classes, and large-patch density-area scaling. |
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