Flux Site Results

Figure 1. Location of Flux sites and transect of Pine plots in Central Oregon.

Table 1. Characteristics of the mature (90 yr) and young (20 yr) ponderosa pine sites. Leaf area index, biomass, and production include understory values (Law et al. 2003). SD in ().

Figure 2. Influence of rainfall events (vertical bars) on diel mean soil CO2 efflux (open symbols) over a 2-month period at the Young site. Data shown is the mean of six automated chambers. Also shown is diel mean soil moisture at 3 cm depth and soil temperature at 15 cm depth.

Figure 3. Schematic of Biome-BGC simulation sequence representing the known details of disturbance history at the Y and O sites. Disturbance event timing is shown above the black timeline, with the resulting ensemble of model runs shown as unfilled arrows. The final analysis period is shown between dashed lines for the O site, with current ages and proportional areas shown for each of the three ensemble components assumed to make up the current stand. Regeneration dynamics following clearcut at the Y site are represented with a single age class (inset).