BIOME-BGC: MODELING CARBON STORAGE AND FLUX OF PONDEROSA PINE (LAW ET AL. 2003)
Entry ID: model_biome_bgc_law
Abstract: This archived model product contains the directions, executables, and
procedures for running Biome-BGC, Version 4.1.2, to recreate the results of the
following article: Law, B. E., O. J. Sun, J. Campbell, S. Van Tuyl, and P. E.
Thornton. 2003. Changes in carbon storage and fluxes in a chronosequence of
ponderosa pine. Global Change Biology, 9(4), 510-514. Abstract excerpt: Forest
development ... following stand-replacing disturbance influences a variety of
ecosystem processes including carbon exchange with the atmosphere. On a
chronosequence of ponderosa pine (Pinius ponderosa var. Laws.) stands in
central Oregon, U.S.A., we used biological measurements to estimate carbon
storage in vegetation and soil pools, net primary productivity (NPP), and net
ecosystem productivity (NEP) in relation to stand age. Measurements were made
in 2000 on a suite of 12 ponderosa pine stands ranging in age from 9 to >300
years. Total ecosystem carbon storage and the fraction of ecosystem carbon in
aboveground wood mass increased rapidly until 150-200 years and did not decline
in older stands. Forest inventory data on 950 ponderosa pine plots in Oregon
show that the greatest proportion of plots exist in stands ~100 years old,
indicating that a majority of stands are approaching maximum carbon storage and
net carbon uptake. Our data suggest that NEP averages ~70 g C m-2 year-1 for
ponderosa pine forests in Oregon. About 85% of the total carbon storage in
biomass on the survey plots exists in stands greater than 100 years, which has
implications for managing forests for carbon sequestration. To investigate
variation in carbon storage and fluxes with disturbance, simulation with
process models requires a dynamic parameterization for biomass allocation that
depends on stand age and should include a representation of competition between
multiple plant functional types for space, water, and nutrients.
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Law B. E., O. J. Sun, J. Campbell, S. Van Tuyl, and P. E. Thornton. 2003.
Changes in carbon storage and fluxes in a chronosequence of ponderosa pine.
Global Change Biology, 9(4), 510-514.
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