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Modeling Aboveground Biomass Regrowth Rates in Tropical Forests

David P Zaks, University of Wisconsin - Madison, zaks@wisc.edu (Presenting)
Navin Ramankutty, McGill Universtiy, nramanku@wisc.edu
Carol Barford, University of Wisconsin - Madison, ccbarford@wisc.edu
Jon Foley, University of Wisconsin - Madison, jfoley@wisc.edu

Understanding the dynamics of tropical land-use / land-cover change is needed to balance the global carbon budget. While the rates and patterns of deforestation are becoming better constrained, the fate of the cleared land is still highly uncertain. It is estimated that 20-50% of deforested land is in some stage of regrowth. This study uses climate and soils data at a pan-tropical scale to model aboveground biomass regrowth in tropical secondary forests. Data from primary literature studies from throughout the tropics are used to fit models using biophysical variables such as growing-season degree-years, and percent of sand content in the soil. Results are shown as biomass accumulation through tropical forests at 1,10,20,50 and 200 years. Validation of the model is attempted using a previously published dataset of global biomass.

Science Theme:  CD (Carbon Dynamics)

Presentation Type:  Poster

Abstract ID: 136

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