Regional carbon cycle responses to 25 years of variation in climate and disturbance in the US Pacific Northwest

摘要: Variation in climate, disturbance regime, and forest management strongly influence terrestrial carbon sources sinks. Spatially distributed, process-based, cycle simulation models provide a means to integrate information on these various influences estimate pools flux over large domains. Here we apply the Biome-BGC model four-state Northwest US region for interval from 1986 2010. Landsat data were used characterize disturbances, inventory parameterize model. The overall rate land across was 0.8 % year−1, with 49 % as harvests, 28 % fire, 23 % pest/pathogen. Net ecosystem production (NEP) 2006–2010 forestland predominantly positive (a sink) throughout region, maximum values Coast Range, intermediate Cascade Mountains, relatively low Inland Rocky Mountain ecoregions. Localized negative NEPs mostly associated recent disturbances. There interannual variation regional NEP, notably 2003, which also warmest year interval. (2006–2010) net balance (NECB) (14.4 TgC year−1). Despite lower area-weighted mean NECB, public contributed larger proportion total NECB because of its area. Aggregated inversion modeling are beginning opportunities evaluating model-simulated stocks fluxes.