Relative Contributions of Forest Vegetation, Land Cover, Topography and Climate in Explaining Fire Regime Patterns (1974–2005) in Peninsular Spain

Table 1

Reference areas and fire regime parameters (fire frequency and rotation periods) in the 15 territories. We present the total area, the proportion of territory selected, the proportion of forest area, the number of 10×10 km grid-units considered in each one and the fire regime variables as median values.

Code	Territory types	Areas of reference				Fire regime (1974–2006) (median values)
	Main tree species (Abbreviation)	Total	Selected			Frequency	Rotation period (years)
		(km^2)	%	Forest (%)	Grids (n)	Fires 10^3ha^−1 yr^−1	Forest area	Wooded	Non wooded
1	Pinus uncinata/abies alba [P. unc./A. al.]	8,610	79	66	69	0.5	1,896	2,810	2,009
2	Fagus sylvatica [F. syl.]	9,960	87	86	87	2.5	303	598	261
3	Juniperus thurifera [J. thu.]	8,000	69	67	55	0.6	4,392	3,879	6,706
4	Quercus robur [Q. rob.]	36,440	98	63	373	12.5	70	72	70
5	Q. pyrenaica [Q. pyr.]	45,440	97	68	444	3.1	135	161	137
6	Q. faginea/Q. pubescens [Q. fag.]	40,470	76	49	307	0.9	1,245	1,426	1,502
7	Q. ilex/Q. rotundifolia [Q. ile.]	22,330	96	50	214	2.4	168	150	246
8	Q. rot. (meso/north) [Q. rot. ms./N.]	57,470	67	38	372	1.5	700	811	784
9	Q. rot. (supra) [Q. rot. su.]	34,760	69	40	239	0.8	1,343	1,477	1,703
10	Q. rot. (meso/acid) [Q. rot. ms./Ac.]	69,100	82	56	551	0.8	508	618	552
11	Q. rot. (meso/basic) [Q. rot. ms./Ba.]	45,700	48	18	218	1.2	953	1016	1,517
12	Q. rot. (meso/south) [Q. rot. ms./S.]	27,910	68	18	189	2.2	642	643	679
13	Q. rot. (thermo) [Q. rot. th.]	23,860	60	22	146	3.0	222	166	395
14	Q. suber [Q. sub.]	15,180	93	65	143	1.5	206	195	191
15	Q. coccifera [Q. coc.]	34,540	61	31	212	1.0	1,831	955	2,623