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This article in SSSAJ

  1. Vol. 56 No. 4, p. 1147-1150
     
    Received: Jan 31, 1991
    Published: July, 1992


    * Corresponding author(s):
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doi:10.2136/sssaj1992.03615995005600040023x

Automated Monitoring of Nitrous Oxide and Carbon Dioxide Flux from Forest Soils

  1. N. S. Loftfield ,
  2. R. Brumme and
  3. F. Beese
  1. Institute of Soil Science and Forest Nutrition, Buesgenweg 2, 3400 Goettingen, Germany
    Gesellschaft für Strahlung und umwelt Forschung Institute of Soil Ecology, Ingolstaeter Landstrasse 1, 8042 Neuherberg, Germany

Abstract

Abstract

Gas flux determinations at the soil-atmosphere interface are of value when modeling either soil or atmospheric chemistry. We describe a system for the automated analysis of N2O and CO2 flux from the soil surface. Fluxes are measured by monitoring increases in N2O and CO2 in double-walled Plexiglas chambers at 30- and 60-min intervals after the chamber lids are closed. Opening and closing of the chamber lids, gas sampling operations, and data collection and analyses are all controlled by a personal computer. In addition to gas fluxes, air and soil temperature as well as light intensity can be monitored. Using this system, up to 12 chambers can be continuously monitored within a 300-m2 area.

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