Time dependence in atmospheric carbon inputs from drainage of organic soils
- Geological Survey, Sacramento, CA (United States)
The authors report the results of a study in the San Joaquin-Sacramento Delta of CO[sub 2] emission from drained soils relative to the rate of subsidence of the land. Their interest is in quantifying the rate carbon is freed from soils which are being drained, primarily for agricultural purposes, relative to the observed subsidence rates. This information is one of the inputs in the global carbon cycle. It is argued that most subsidence is the result of carbon oxidation. The fact that subsidence rates correlate with carbon dioxide emission rates supports this argument. In this Delta, subsidence rates have been decreasing in recent years, and measurements indicate that present carbon dioxide emission rates are lower than previous estimates by a factor or 3 or 4.
- OSTI ID:
- 6066092
- Journal Information:
- Geophysical Research Letters (American Geophysical Union); (United States), Vol. 20:13; ISSN 0094-8276
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
EMISSION
RIVER DELTAS
GROUND SUBSIDENCE
SOILS
DRAINAGE
CALIFORNIA
CARBON CYCLE
TIME DEPENDENCE
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COASTAL REGIONS
DEVELOPED COUNTRIES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
USA
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)