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Soil respiration at the Amargosa Desert Research site: A section in U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)

By:
, ORCID iD , and
Edited by:
David W. Morganwalp and Herbert T. Buxton

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Abstract

Automated opaque flux-chamber measurements of soil carbon dioxide (CO2) flux (soil respiration) into the atmosphere at the Amargosa Desert Research Site show seasonal and diel cycles of soil respiration that are closely linked with soil temperature and soil moisture. During 1998, soil respiration increased with soil warming through spring, reaching a maximum rate (not counting anomalously high values scattered through the record) of about 0.055 moles CO2 m-2 day-1 around Julian Day 120. Respiration rates then declined along with volumetric soil moisture content, tending to stay at or below about 0.02 moles CO2 per square meter per day (m-2 day -1) for the rest of the year, except after summer rainfalls when respiration sharply increased for short periods. The diel respiration pattern during dry spells is marked by a sharp rise in CO2 flux coincident with steeply rising soil temperatures in the morning, then dropping back to low levels about the time of maximum soil temperature. The reason for this pattern in unclear.

Additional publication details

Publication type:
Report
Publication Subtype:
Other Report
Title:
Soil respiration at the Amargosa Desert Research site: A section in U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)
Year Published:
1999
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
West Trenton, NJ
Contributing office(s):
Nevada Water Science Center
Description:
8 p.
Larger Work Type:
Report
Larger Work Subtype:
USGS Numbered Series
Larger Work Title:
U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)
First page:
491
Last page:
498
Conference Title:
Seventh Technical Meeting of the U.S. Geological Survey Toxic Substances Hydrology Program
Conference Location:
Charleston, SC
Conference Date:
March 8-12, 1999
Country:
United States
State:
Nevada
County:
Nye County
City:
Beatty
Other Geospatial:
Amargosa Desert Research site