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Synthesis Studies of Secondary Forest Productivity in the Amazon: Field Data, Remote Sensing, Modeling Approaches

Christopher Potter, NASA Ames, (Presenting)
Mercedes Bustamante, Universidade de Brasília,
Laerte Ferreira, Universidade Federal de Goias,
Alfredo Huete, Univ. Arizona,
Steven Klooster, California State Univ.,
Marc Kramer, UC Santa Cruz,
Raimondo Cosme, Embrapa,

We are using measurement data and MODIS remote sensing observations at locations that represent conversion patterns of primary forests to regrowing secondary forests in Amazonia. A principal objective is to improve calibration of the NASA-CASA productivity and soil biogeochemistry modeling and subsequently evaluate and refine a series of regional model simulation runs for transformed forest ecosystems. We have implemented the aboveground biomass accumulation (ABA) rate model of Zarin et al. (2001) on the CASA 8-km regional grid as an initial representation of potential secondary forest regrowth for the Legal Amazon. Our next objective is to evaluate the NASA-CASA model predicted ABA rates over several forest clearing and regrowth cycles with simulated nitrogen (loss) limitations on secondary forest NPP patterns.

Science Theme:  CD (Carbon Dynamics)

Presentation Type:  Poster

Abstract ID: 5

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