LBA-ECO TG-07 Soil Trace Gas Flux and Root Mortality, Tapajos National Forest

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.

Resources

Name Format Description Link
5 https://daac.ornl.gov%2FLBA%2Fguides%2FTG07_Root_Mortality_Experiment.html
5 https://doi.org%2F10.3334%2FORNLDAAC%2F924
5 https://data.ornldaac.earthdata.nasa.gov%2Fprotected%2Fbundle%2FTG07_Root_Mortality_Experiment_924.zip
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Flba%2Ftrace_gases%2FTG07_Root_Mortality_Experiment%2Fcomp%2FTG07_Root_Mortality_Experiment.pdf
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DTG07_Root_Mortality_Experiment_924%26ac%3Dtrue
5 https://daac.ornl.gov%2Fgraphics%2Fbrowse%2Fproject%2Fsquare%2Flba_logo_square.png
5 https://search.earthdata.nasa.gov/search?q=TG07_Root_Mortality_Experiment_924&ac=true
21 https://doi.org/10.3334/ORNLDAAC/924
57 TG07_Root_Mortality_Experiment_924.zip https://data.ornldaac.earthdata.nasa.gov/protected/bundle/TG07_Root_Mortality_Experiment_924.zip
34 lba_logo_square.png https://daac.ornl.gov/graphics/browse/project/square/lba_logo_square.png
33 TG07_Root_Mortality_Experiment.pdf https://data.ornldaac.earthdata.nasa.gov/public/lba/trace_gases/TG07_Root_Mortality_Experiment/comp/TG07_Root_Mortality_Experiment.pdf
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2777750323-ORNL_CLOUD.iso19115

Tags

  • earth-science-atmospheric-temperature-atmosphere-surface-temperature-air-temperature
  • earth-science-soils-land-surface-soil-moisture-water-content
  • earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-methane
  • earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-atmospheric-car
  • earth-science-habitat-conversion-fragmentation-human-dimensions-deforestation
  • earth-science-atmospheric-chemistry-atmosphere-nitrogen-compounds-nitrogen-oxides
  • earth-science-atmospheric-chemistry-atmosphere-nitrogen-compounds-nitrous-oxide
  • earth-science-soils-land-surface-soil-temperature

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