Table 3 Numbers of forest fires, areas (ha), and percentages of area burned by fire severity class in Jeffrey pine and mixed conifer forests in the Sierra de San Pedro Mártir National Park between 1984 and 2010.
Fire severity class (area of basal area change) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Year | Number of fires | Not changed 0 % | >0 % to <10 % | ≥10 % to <25 % | ≥25 % to <50 % | ≥50 % to <75 % | ≥75 % to <90 % | High ≥90 % | Total area burned (ha) | High severity as % of total area |
1985 | 1 | 0.00 | 0.02 | 0.11 | 0.06 | 0 | 0.05 | 0.01 | 0.25 | 4 |
1987 | 3 | 5.33 | 2.73 | 0.97 | 0.85 | 0.9 | 0.16 | 0.63 | 11.57 | 5 |
1989 | 3 | 121.33 | 60.47 | 34.35 | 36.45 | 19.93 | 8.42 | 10.36 | 291.31 | 4 |
1995 | 1 | 64.35 | 25.86 | 3.92 | 1.94 | 0.9 | 0.27 | 0.14 | 97.38 | 0 |
1996 | 1 | 164.94 | 182.75 | 93.1 | 78.07 | 35.63 | 10.98 | 8.41 | 573.88 | 1 |
1999 | 1 | 0.84 | 3.86 | 2.93 | 1.99 | 1.00 | 0.44 | 1.33 | 12.39 | 11 |
2000 | 1 | 0.06 | 0.16 | 0.32 | 0.07 | 0.03 | 0.00 | 0.00 | 0.65 | 0 |
2001 | 1 | 0.79 | 1.00 | 0.14 | 0.39 | 0.35 | 0.00 | 0.00 | 2.67 | 0 |
2002 | 2 | 49.09 | 24.35 | 15.54 | 18.71 | 9.44 | 2.99 | 6.23 | 126.35 | 5 |
2003 | 1 | 156.83 | 157.19 | 88.03 | 77.7 | 38.77 | 15.26 | 12.54 | 546.32 | 2 |
2006 | 1 | 39.25 | 82.33 | 67.53 | 59.1 | 22.81 | 6.91 | 3.51 | 281.45 | 1 |
2007 | 1 | 2.19 | 4.99 | 6.12 | 12.49 | 7.38 | 4.74 | 11.34 | 49.25 | 23 |
Totals | 17 | 605.01 | 545.72 | 313.06 | 287.82 | 137.14 | 50.22 | 54.5 | 1993.47 | 3 |
% of total area | 30 | 27 | 16 | 14 | 7 | 3 | 3 | 100 | 3 | |