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This article in SSSAJ

  1. Vol. 52 No. 4, p. 1201-1203
     
    Received: Oct 13, 1987
    Published: July, 1988


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doi:10.2136/sssaj1988.03615995005200040060x

Measurement of Nitrous Oxide Dissolved in Soil Solution

  1. E. A. Davidson  and
  2. M. K. Firestone
  1. Dep. of Plant and Soil Biology, 108 Hilgard Hall, Univ. of California, Berkeley, CA 94720

Abstract

Abstract

Degassing of soil solution as soil water enters springs and streams may be a significant pathway of N2O release into the atmosphere. A simple method is presented to sample soil solution to include gases dissolved in solution. Small porous cup lysimeters connected to narrow diameter nylon tubing were flushed with N2 gas; a vacuum was applied with an evacuated serum bottle; and solution and gases were captured in the bottle. Concentrations of N2O in soil solution of a grassland in central California varied from below ambient to 13 times ambient. At a wet riparian zone site, N2O in soil solution appeared to be related to NO-3 concentration, which can be determined from the same soil solution sample.

Contribution of the Dep. of Plant and Soil Biology.

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