The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) is an international research initiative conducted from 1995-2005 and led by Brazil.

The LBA Project encompasses several scientific disciplines, or components. The LBA-ECO component focuses on the question:

"How do tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in Amazonia?"

The Amazon rain forest or Amazonia, is the largest remaining expanse of tropical rain forest on Earth, harboring approximately one-third of all Earth's species. Although the rain forest's area is so large that it reaches out into several different countries, most of its area is located within the Brazilian territory. Despite three centuries of scientific study in Amazonia, only a small fraction of its biological richness has been revealed.

The ORNL DAAC LBA Data archive includes more than 85 data products, and when compilation is complete will contain about 300, from the following categories:

• Atmospheric Chemistry
• Carbon Dynamics
• Human Dimensions
• Land Use and Land Cover Change
• Nutrient Dynamics
• Physical Climate
• Surface Hydrology and Water Chemistry
• Trace Gases

The following LBA resources are maintained by the ORNL DAAC:

• LBA Data and Publication Policy
• LBA Special Issue Journal Links
  
• LBA Scientific Conference 2004 Digital Archive