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Investigation:

TG-05 (Potter / Carvalho / Oliveira)

LBA Dataset ID:

TG05_Poster_001

Originator(s):

Guild, Liane S.

Point(s) of Contact:

Guild, Liane S. (liane@gaia.arc.nasa.gov)

Dataset Abstract:

Biomass burning associated with deforestation and land use in the Amazon greatly contributes to emissions and depletion of elemental pools. We identified deforestation and pasture formation and quantified resultant burning emissions and terrestrial aboveground elemental pool losses during a period of early colonization in the vicinity of Jamari, Rondonia. Using the Tasseled Cap transformation on multi-date Landsat Thematic Mapper (TM) data (1984-1992), we developed a land cover change map for a 94,372-ha study area. Between 1984 and 1992, 8,250 ha of primary and 828 ha of regenerating forest were cleared (18% and 1% of the study area, respectively). Equations were developed using pasture management burning scenarios to model cumulative area of pasture burned (19,008 ha). Emissions were computed using a model that scaled up ground-based data (biomass, flaming and smoldering combustion emission factors, and combustion factors) by land cover type (primary forest, regenerating forest, and pasture). Over the extent of the entire study area, an average of 138, 920, and 16 kg C ha-1 yr-1 in CO, CO2, and CH4, respectively, were generated from primary forest slash burns. Regenerating forest slash fires contributed 4, 31, and <1 kg C ha-1 yr-1 in CO, CO2, and CH4, respectively. The cumulative area of pasture burned produced 46, 316, and 4 kg C ha-1 yr-1 in CO, CO2, and CH4, respectively. Site estimates of C, N, and S pools and losses were applied to the land cover change map to estimate elemental pool losses from slash and pasture fires during the study period. In 1984, study area elemental pools were 163,297 kg C ha-1, 1,971 kg N ha-1, and 199 kg S ha-1. Between 1984 and 1992, 5%, 7%, and 5% of the terrestrial aboveground C, N, and S pools, respectively, were lost from primary forest slash fires. Also, cumulative pasture burning contributed to losses of 1%, 2%, and 1% of the C, N, and S pools, respectively.

Beginning Date:

1984-06-24

Ending Date:

1992-06-24

Metadata Last Updated on:

2009-06-17

Data Status:

Not Applicable

Access Constraints:

Public

Data Center URL:

Distribution Contact(s):

Luiz M. Horta (horta@cptec.inpe.br)

Access Instructions:

Public

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Poster(s):

Search at ORNL DAAC

Keywords - Theme:

Parameter Topic Term Source Sensor
TRACE GASES ATMOSPHERE ATMOSPHERIC CHEMISTRY LANDSAT-5 (LAND REMOTE-SENSING SATELLITE-5) TM (THEMATIC MAPPER)

Uncontrolled Theme Keyword(s):  poster

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Rondonia Jamari

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