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Current and Future Carbon Budgets of Tropical Rain Forest: A Cross Scale Analysis.

DE2005825088

Publication Date	2005
Personal Author	Oberbauer, S. F.; Clark, D. A.; Veldkamp, E.
Page Count	231
Abstract	The goal of this project was to make a first assessment of the major carbon stocks and fluxes and their climatic determinants in a lowland neotropical rain forest, the La Selva Biological Station, Costa Rica. Our research design was based on the concurrent use of several of the best available approaches, so that data could be cross-validated. A major focus of our effort was to combine meteorological studies of whole-forest carbon exchange (eddy flux), with parallel independent measurements of key components of the forest carbon budget. The eddy flux system operated from February 1998 to February 2001. To obtain field data that could be scaled up to the landscape level, we monitored carbon stocks, net primary productivity components including tree growth and mortality, litterfall, woody debris production, root biomass, and soil respiration in a series of replicated plots stratified across the major environmental gradients of the forest. A second major focus of this project was on the stocks and changes of carbon in the soil. We used isotope studies and intensive monitoring to investigate soil organic stocks and the climate-driven variation of soil respiration down the soil profile, in a set of six 4m deep soil shafts stratified across the landscape. We measured short term tree growth, climate responses of sap flow, and phenology in a suite of ten canopy trees to develop individual models of tree growth to daytime weather variables.
Keywords	Carbon cycle Forests Biomass Climates Costa Rica Monitoring Mortality Phenology Production Productivity Rain Respiration Soils Trees Weather
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Florida International Univ., Miami.; Missouri Univ.-St. Louis.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Missouri Univ.-St. Louis. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	200526

Current and Future Carbon Budgets of Tropical Rain Forest: A Cross Scale Analysis.

Current and Future Carbon Budgets of Tropical Rain Forest: A Cross Scale Analysis.
DE2005825088

Publication Date	2005
Personal Author	Oberbauer, S. F.; Clark, D. A.; Veldkamp, E.
Page Count	231
Abstract	The goal of this project was to make a first assessment of the major carbon stocks and fluxes and their climatic determinants in a lowland neotropical rain forest, the La Selva Biological Station, Costa Rica. Our research design was based on the concurrent use of several of the best available approaches, so that data could be cross-validated. A major focus of our effort was to combine meteorological studies of whole-forest carbon exchange (eddy flux), with parallel independent measurements of key components of the forest carbon budget. The eddy flux system operated from February 1998 to February 2001. To obtain field data that could be scaled up to the landscape level, we monitored carbon stocks, net primary productivity components including tree growth and mortality, litterfall, woody debris production, root biomass, and soil respiration in a series of replicated plots stratified across the major environmental gradients of the forest. A second major focus of this project was on the stocks and changes of carbon in the soil. We used isotope studies and intensive monitoring to investigate soil organic stocks and the climate-driven variation of soil respiration down the soil profile, in a set of six 4m deep soil shafts stratified across the landscape. We measured short term tree growth, climate responses of sap flow, and phenology in a suite of ten canopy trees to develop individual models of tree growth to daytime weather variables.
Keywords	Carbon cycle Forests Biomass Climates Costa Rica Monitoring Mortality Phenology Production Productivity Rain Respiration Soils Trees Weather
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Florida International Univ., Miami.; Missouri Univ.-St. Louis.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Missouri Univ.-St. Louis. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	200526