SEEPS DEO 
i LD 
COVER TYPE AND FIRE CONTROL 
AVERAGE ACREAGE, ALL FIRES, ALL CAUSES, BY TYPES 191!-i920 
a | 
GRASS —— a 
CHAPARRAL 
| — 
WOODLAND AZZ 
BRUSH == se 
YELLOW PINE ZL 
DOUGLAS. FIR a. Z3 
MIXED CONIFER 
SUGAR PINE-FIR fF 
| FIR Wa 
vemeeg aque 
|| BRASS WMI: cma VU“ 
CHAPARRAL VEEL: 
WOODLAND 
BRUSH OO 
YELLOW PINE LIT 
TELETEZL. 
pouctas FIR GZ ne VVVVVC_@ Vl! 
MIXED CONIFER WWW 
WLM 
SUGAR es a Mt#»@qw0#@ 
FIR 
ANNUAL PERCENTAGE OF TOTAL plies aa ALL ae 
ee oon 
GRASS Zilla | | 
CHAPARRAL a | ee MM ioe 
WOODLAND WILLA, 
BRUSH WML 
veLlow PINE Wf 
poucLas FIR W777 
MIxED coniFER WZ 
SUGAR PINE-FIR WY 
FIR Vf) 
2 
PER CENT 
FIGURE 7.—Acreage burned, all causes, by types, 1911-1920 
27 
