The ORNL DAAC and the LBA DIS announce the release of two data sets associated with the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA).
These data were collected in the logging concession at the Fazenda Rohsamar in the municipality of Juruena in northwestern Mato Grosso where reduced impact logging techniques were employed.
LBA-ECO ND-11 Forest Damage following Reduced Impact Logging, NW Mato Grosso, Brazil . Data set prepared by T.R. Feldpausch, S. Jirka, C.A.M. Passos, and S.J. Riha. Estimates of damage associated with logging operations were made after logging operations were complete in 2003 and 2004. Damage associated with gaps created by felling single trees was estimated in 54 individual gaps. Damage to all surrounding trees was recorded. A statistical sampling of the block allowed investigators to estimate the extent of different types of damage associated with reduced impact logging.
LBA-ECO ND-11 Forest Soil Structure and Nitrate, NW Mato Grosso, Brazil: 2004-2005 . Data set prepared by T.R. Feldpaush, E.G. Couto, J. Lehmann, and S.J. Riha. Data are reported on soil samples analyzed for nitrate (NO3) and physical properties that were collected for one year following reduced impact logging. Soil samples were collected to 8-m depth in gaps formed by single tree removal and areas of undisturbed primary forest. These results quantified the effects of reduced impact logging, to test whether nitrogen (N) loss from leaves and coarse woody debris under reduced impact logging resulted in a significant accumulation of subsoil nitrate.
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.