Spatial patterns of fire occurrence in Catalonia,NE, Spain |
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Authors: | Email author" target="_blank">Ricardo?Díaz-DelgadoEmail author Francisco?Lloret Xavier?Pons |
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Institution: | (1) Centre for Ecological and Forestry Applications Research (CREAF), Autonomous University of Barcelona, Bellaterra, 08193 Barcelona, Spain;(2) Department of Geography, Bellaterra, 08193 Barcelona, Spain |
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Abstract: | In this paper, we analyse spatial patterns of fire occurrence in Catalonia (NE Spain) during 1975–98. Fire scar maps, discriminated by means of 30–60 m resolution remote sensing imagery, have been used as a source of fire occurrence. We employ several visual or analytical approaches to interpret fire occurrence in this region, such as those of Minnich and Chou (1997), Ricotta et al. (2001) or Krummel et al. (1987). Crucial spatial patterns such as fire size distribution, fire frequency distribution, spots and residual vegetation islands are documented. In addition, several geographical layers were overlaid with burned area maps in order to determine interactions between fire occurrence and environmental parameters such as altitude, slope, solar radiation, and burned land cover. Assuming that fire occurrence is well determined by such a posteriori empirical factors we detect areas most prone to fire in this region and aim to enhance the local forest management and conservation plans. |
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Keywords: | Fire occurrence Fire recurrence Fire size distribution Fractal dimension Land cover Lorenz curves Spots Residual vegetation islands |
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