Four LBA-ECO Data Sets Released from the Carbon Dynamics and Trace Gas Teams.

The ORNL DAAC and the LBA DIS announce the release of three data sets from Carbon Dynamics CD-06 team and one data set from the Trace Gas TG-07 team, all within the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA).

• LBA-ECO CD-06 Soil Classification Map, Ji-Parana River Basin, Rondonia, Brazil. Data set prepared by M.V.R Ballester, D. de C. Victoria, A.V. Krusche, R.L. Victoria, and J.E. Richey. This data set provides a digital map of soil orders for the Ji-Parana River Basin. Soil orders were manually digitized from a 1:500,000 map from EMBRAPA originally published in 1983.

• LBA-ECO CD-06 Amazon River Basin Land and Stream Drainage Direction Maps . Data set prepared by E. Mayorga, M.G. Logsdon, M.V.R. Ballester, and J.E. Richey. This data set provides high-resolution (~500 m) gridded land and stream drainage direction maps for the Amazon River Basin, excluding the Rio Tocantins Basin. The data products include (1) a stream network coverage with stream order assigned to each reach; (2) the basin boundaries of the major tributaries to the Amazon mainstem; (3) the mouths; and (4) the source points of these tributaries.

• LBA-ECO CD-06 Ji-Parana River Basin Land Use and Land Cover Map, Brazil: 1999. Data set prepared by M.V.R Ballester, D. de C. Victoria, R. Coburn, A.V. Krusche, R.L. Victoria, J.E. Richey, M.G. Logsdon, E. Mayorga, and E. Matricardi. This data set provides a land use/land cover map at 30-m resolution of the Ji-Parana River Basin produced from the digital classification of eight Landsat 7-ETM+ scenes from 1999.

• LBA-ECO TG-07 Forest Soil P, C, and N Pools, km 83 Site, Tapajos National Forest . Data set prepared by M.E McGroddy. This data set reports phosphorus (P), carbon (C), and nitrogen (N) nutrient pool concentrations for forest soils and roots and P pool concentrations for forest floor litter, soil solutions, and microbial extracts. Soil cores were collected every 4 months from August 1999 through April 2000 during a soil P addition fertilization experiment.

LBA is an international research initiative under the leadership of Brazil. The project focuses on the climatological, ecological, biogeochemical, and hydrological functions of Amazonia; the impact of land use change on these functions; and the interactions between Amazonia and the Earth system. The LBA-ECO component, which is funded by NASA, 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?"

See the LBA Project page for further information about the study and to access associated data and documentation maintained by the ORNL DAAC.

The ORNL DAAC is a NASA-funded data center archiving and distributing terrestrial ecology and biogeochemical dynamics data. The LBA Data and Information System (LBA-DIS) has been developed by INPE with NASA's participation.