Insects and Disease Damage Among Owners
survey data trends over the last 25 years (Figure B.8). These 25- year trends, and the last 10 years, show consistently low levels of detectable insect and disease damage on tribal lands with two exceptions, damage levels comparable to non-federal forests and woodlands (comprised of industrial, small private and
state lands) and consistently lower than US Forest Service lands, a dominant landowner in the Northwest and Southwest BIA regions. Aerial detection surveys are valuable for detecting significant disturbance, but the technique has its limitations, for example, not all lands are flown each year, flights only occur
Mortality rates on tribal lands are relatively low across regions (Figure B.2) compared to other landowners, particularly the US Forest Service. These FIA data are confirmed by aerial detection
Table B.4. Wildfire Hazard Potential (WHP) in High/Very-High Hazard group by consolidated BIA Region as percent of total timberland plus woodland acres (derived from Dillon 2023). 2010 WHP ratings use 2010 LANDFIRE vegetation database combined with 2010 field conditions (burn probabilities). 2021 WHP ratings use 2010 LANDFIRE vegetation combined with 2021 field conditions (burn probabilities).
Agency/ Ownership
Change in Percent
Region
2010 Data 2021 Data
Rank
BIA
46% 39% 31% 30% 34% 28% 19% 30% 19% 15%
48% 47% 32% 28% 29% 11% 16% 19% 16% 15%
2% 8% 0%
1 2 3 5 4 5 2 1 2 4 2 1 4 4 3 4 2 1 3 4 3 1 2 4 5
USFS
Pacific Northwest (NWRO, RMRO, PRO)
Other Federal Govt State & Local Govt
-2% -5%
Private
BIA
-17%
USFS
-3%
Eastern Region (ERO)
Other Federal Govt State & Local Govt
-10%
-3%
Private
0%
BIA
17% 17%
10% 15%
-7% -2% -1% -3% -2%
USFS
Lake States (MWRO, SPRO, GPRO, EORO)
Other Federal Govt State & Local Govt
6% 7% 8%
5% 5% 7%
Private
BIA
36% 35% 52% 34% 26% 36% 35% 41% 19% 17%
45% 53% 58% 47% 45% 41% 44% 43% 18% 17%
9%
USFS
18%
Southwest (NRO, SWRO, WRO)
Other Federal Govt State & Local Govt
6%
13% 19%
Private
BIA
5% 9% 2%
USFS
Contiguous US
Other Federal Govt State & Local Govt
-1%
Private
0%
Task Findings and Recommendations 89
Made with FlippingBook interactive PDF creator