Vegetation and topographical correlates of fire severity from two fires in the Klamath-Siskiyou region of Oregon and California

被引:87
作者
Alexander, John D.
Seavy, Nathaniel E.
Ralph, C. John
Hogoboom, Bill
机构
[1] Klamath Bird Observ, Ashland, OR 97520 USA
[2] Univ Florida, Dept Zool, Gainesville, FL 32611 USA
[3] US Forest Serv, USDA, Redwood Sci Lab, SW Res Stn, Arcata, CA 95521 USA
关键词
classification trees; topography; vegetation structure; wildfire;
D O I
10.1071/WF05053
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
We used vegetation data collected in areas before they were burned by the 2500ha Quartz fire in southern Oregon and the 50 600 ha Big Bar complex in northern California to evaluate the ability of vegetation and topographic characteristics to predict patterns of fire severity. Fire severity was characterized as high, moderate, or low based on crown scorch and consumption, and changes in soil structure. In both fires, vegetation plots with southern aspects were more likely to burn with high severity than plots with eastern, northern, or western aspects. This was the only consistent predictor across both fires. In the Quartz fire, we found that plots at higher elevations and with larger diameter trees were more likely to burn with low or moderate severity. These correlations may have been influenced in part by the effects of unmeasured weather conditions. We found few strong correlates in the Big Bar complex, owing in part to the fact that most (75%) of our plots were in the low-severity category, providing relatively little variation. These results, in combination with previous studies of fire severity in the Klamath-Siskiyou region, suggest that areas with southern aspects tend to burn with greater severity than those of other aspects, areas with large trees burn less severely than those with smaller trees, and that correlates of fire severity vary extensively among fires.
引用
收藏
页码:237 / 245
页数:9
相关论文
共 49 条
[1]  
Agee J.K., 1993, FIRE ECOLOGY PACIFIC
[2]   FUEL SUCCESSION IN A WESTERN HEMLOCK DOUGLAS-FIR FOREST [J].
AGEE, JK ;
HUFF, MH .
CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 1987, 17 (07) :697-704
[3]  
AGEE JK, 1991, NORTHWEST SCI, V65, P188
[4]  
AGRESTI A., 2019, INTRO CATEGORICAL DA
[5]  
Alexander J. D., 2004, P 2 C KLAM SISK EC, P33
[6]  
Andrews P, 1986, INT194 USDA FOR SERV
[7]  
[Anonymous], 2003, RMRSGTR106WWW USDA F
[8]   THE RELATIVE IMPORTANCE OF FUELS AND WEATHER ON FIRE BEHAVIOR IN SUB-ALPINE FORESTS [J].
BESSIE, WC ;
JOHNSON, EA .
ECOLOGY, 1995, 76 (03) :747-762
[9]  
Breiman L., 1998, CLASSIFICATION REGRE
[10]  
Byram G.M., 1959, Forest Fire: Control and Use, V61, P89, DOI DOI 10.1007/S10980-016-0420-8