Table 1: Factor differences from air baselines (baselines = 1.0) for pristine and thinned forest soils. Air samples and pristine soil measurements were taken from a forest area approximately 300 yds. From the mechanically thinned forest region. In the thinned forest, the carbon dioxide soil level is 0.9 that of the pristine forest soil, and methane is 0.75.
Carbon Dioxide Methane Water Vapor
Pristine Forest Soil 2.96 0.56 1.44
Thinned Forest Soil 2.66 0.42 1.41