Journal
ECOLOGICAL APPLICATIONS
Volume 18, Issue 5, Pages 1212-1225Publisher
WILEY
DOI: 10.1890/07-0825.1
Keywords
burn probability; fire risk; LANDIS; Ozark Highlands, USA; spatial point pattern; wildfire
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Understanding spatial controls on wild. res is important when designing adaptive. re management plans and optimizing fuel treatment locations on a forest landscape. Previous research about this topic focused primarily on spatial controls for. re origin locations alone. Fire spread and behavior were largely overlooked. This paper contrasts the relative importance of biotic, abiotic, and anthropogenic constraints on the spatial pattern of reoccurrence with that on burn probability (i. e., the probability that fire will spread to a particular location). Spatial point pattern analysis and landscape succession. re model ( LANDIS) were used to create maps to show the contrast. We quanti. ed spatial controls on both. re occurrence and. re spread in the Midwest Ozark Highlands region, USA. This area exhibits a typical anthropogenic surface. re regime. We found that (1) human accessibility and land ownership were primary limiting factors in shaping clustered. re origin locations; (2) vegetation and topography had a negligible in. uence on fire occurrence in this anthropogenic regime; (3) burn probability was higher in grassland and open woodland than in closedcanopy forest, even though fire occurrence density was less in these vegetation types; and (4) biotic and abiotic factors were secondary descriptive ingredients for determining the spatial patterns of burn probability. This study demonstrates how fire occurrence and spread interact with landscape patterns to affect the spatial distribution of wildfire risk. The application of spatial point pattern data analysis would also be valuable to researchers working on landscape forest fire models to integrate historical ignition location patterns in fire simulation.
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