Platforms>In Situ Land-based Platforms>LABORATORY
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LBA-ECO TG-07 A SOIL TRACE GAS FLUX AND ROOT MORTALITY, TAPAJOS NATIONAL FOREST Entry ID: LBA_TG07_STGFARM |
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Summary
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Abstract:
We conducted an experiment on sand and clay tropical forest soils to test the short-term effect of root mortality on the soil-atmosphere flux of nitrous oxide, nitric oxide, methane, and carbon dioxide. We induced root mortality by isolating blocks of land to 1 m using trenching and root exclusion screening. Gas fluxes were measured weekly for ten weeks following the trenching treatment. For nitrous oxide there was a highly significant increase in soil-atmosphere flux over the ten weeks following treatment for trenched plots compared to control plots. N2O flux averaged 37.5 and 18.5 ng N cm-2 h-1 from clay trenched and control plots and 4.7 and 1.5 ng N cm-2 h-1 from sand trenched and control plots. In contrast, there was no effect for soil-atmosphere flux of nitric oxide, carbon dioxide, or methane.
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Link: VIEW RELATED INFORMATION Description: LBA-ECO TG-07 A SOIL TRACE GAS FLUX AND ROOT MORTALITY, TAPAJOS NATIONAL FOREST |
Geographic Coverage
| N: -3.017 | S: -3.017 | E: -54.9707 | W: -54.9707 |
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Data Set Citation
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Dataset Originator/Creator:
KELLER, M.M.VARNER, R.K.
Dataset Title: LBA-ECO TG-07 A SOIL TRACE GAS FLUX AND ROOT MORTALITY, TAPAJOS NATIONAL FOREST Dataset Release Date: 2009 Dataset Release Place: Oak Ridge, Tennessee, U.S.A. Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center Data Presentation Form: Online Files Dataset DOI: doi:10.3334/ORNLDAAC/924 Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=924&term2attribut... |
Temporal Coverage
| Start Date: 2000-06-04 |
| Stop Date: 2001-05-15 |
Location Keywords
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CONTINENT
> SOUTH AMERICA
> BRAZIL
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Science Keywords
| ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE [Definition] |
| ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >CARBON DIOXIDE [Definition] |
| ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >METHANE [Definition] |
| ATMOSPHERE >ATMOSPHERIC CHEMISTRY >NITROGEN COMPOUNDS >NITROGEN OXIDES [Definition] |
| LAND SURFACE >SOILS >SOIL MOISTURE/WATER CONTENT [Definition] |
| LAND SURFACE >SOILS >SOIL TEMPERATURE [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT GEOSCIENTIFIC INFORMATION |
Platform
| FIELD INVESTIGATION [Information] |
| LABORATORY [Information] |
Instrument
| Thermometers [Information] |
| IRGA >Infrared Gas Analyzers [Information] |
| GAS CHROMATOGRAPHS [Information] |
| FLAME-IONIZATION DETECTOR [Information] |
| CHEMILUMINESCENCE |
| BALANCE [Information] |
| TEMPERATURE PROBES [Information] |
Project
| ESIP >Earth Science Information Partners Program [Information] |
| EOSDIS >Earth Observing System Data Information System [Information] |
| LBA-ECO >NASA's Component of the Large-scale Biosphere-Atmosphere Experiment in Amazonia [Information] |
Keywords
| SOIL |
| GC-ECD |
| METHANE |
| NITRIC OXIDE |
| SOIL MOISTURE |
| NITROUS OXIDE |
| ROOT MORTALITY |
| CARBON DIOXIDE |
| TRACE GAS EXCHANGE |
Data Set Progress
| COMPLETE |
Data Center
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THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)
[Information]
Data Center URL: http://daac.ornl.gov/ Dataset ID: 924
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Personnel
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M.
M.
KELLER Role: TECHNICAL CONTACT |
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ORNL DAAC USER SERVICES OFFICE Role: DIF AUTHOR Phone: (865) 574-7447 Email: uso at daac.ornl.gov Contact Address: ORNL DAAC User Services Office Oak Ridge National Laboratory City: Oak Ridge Province or State: TN Postal Code: 37831-6407 Country: USA |
Creation and Review Dates
DIF Creation Date:
2009-04-30
Last DIF Revision Date:
2012-08-14
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