AERIAL DETECTION SURVEY, 2017

Forest Disturbance Activity and Trends
Acres Containing Affected
Hosts (Mortality)

Acres
2016

Acres
2017

ponderosa pine

1,485

0

19

0

gray or California foothill pine
sugar pine
bigcone Douglas-fir
tanoak
Douglas-fir
Coulter pine
white fir
Jeffrey pine

3,458

0

45

55

92

101

224

505

7,739

855

13,879

1,540

9,465

16,601