The Wasatch and Uinta Ecoregion, represented by samples collected in Utah, had significantly higher carbon stocks than all other ecoregions (p ≤ 0.0016 for all pairwise comparisons). Within ecoregions, reference stocks are highest in the Coast Range, Blue Mountains and Wasatch and Uinta regions.
Combining all samples from all sites revealed significantly higher reference carbon stocks than degraded and treatment, and no significant difference between degraded and treatment (Figure 4). This result was the same for a simple comparison of the three treatment categories and a model comparison that accounted for moisture, site, sample location, and depth.