LBA-ECO TG-07 Soil Trace Gas Flux and Root Mortality, Tapajos National Forest
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.
Complete Metadata
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| description | 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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| identifier | 10.3334/ORNLDAAC/924 |
| keyword |
[
"earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-atmospheric-car",
"earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-methane",
"earth-science-atmospheric-chemistry-atmosphere-nitrogen-compounds-nitrogen-oxides",
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| landingPage | https://search.earthdata.nasa.gov/search?q=TG07_Root_Mortality_Experiment_924&ac=true |
| modified | 2026-02-17 |
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"026:000"
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"[[{"WestBoundingCoordinate":-54.9707,"NorthBoundingCoordinate":-3.017,"EastBoundingCoordinate":-54.9707,"SouthBoundingCoordinate":-3.017}],"CARTESIAN"]"
|
| temporal | 2000-06-04/2000-06-04 |
| theme |
[
"Earth Science"
]
|
| title | LBA-ECO TG-07 Soil Trace Gas Flux and Root Mortality, Tapajos National Forest |
