Acres Burned Inside Roadless vs. Total

1981–2021

Lower 48 states. Bars show each year's raw acres burned inside roadless. Both lines are 5-year trailing averages (current year + prior 4), plotted on the same axis since inside-roadless acreage is a subset of the total.

Annual acres burned inside roadless Acres burned inside the roadless area (5-yr avg) Total acres burned (5-yr avg) 2001 Roadless Rule

Roadless Share of Total Burn

Acres burned inside roadless areas as a % of that year's total acres burned

1981–2021

Gray bars = raw annual share. Bold blue line = 5-year trailing average. Same x-axis as the chart above.

Annual share (raw) 5-year trailing average 2001 Roadless Rule

Difference-in-differences regression (Inside × Post, controlling for the overall time trend): p = 0.114 — not statistically significant at the conventional 0.05 threshold.