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ARS Home » Research » Publications at this Location » Publication #61507
Title: CH4 FLUX ESTIMATES FROM NATURAL AND AGRICULTURAL ECOSYSTEMS

Author
item CHAN, A - IOWA STATE UNIVERSITY
item Parkin, Timothy

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/3/1995
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Little is known about the role of agricultural soils in the production and consumption of CH4. This study was done to monitor and compare CH4 fluxes from natural and agricultural ecosystems under different management regimes, including Forest, Native Prairie, Manure fertilized (Injected and Broadcasted), and chemical N fertilizer. Flux measurements were obtained by using the Closed-Chamber method. The measurements were compiled by sampling across the 1993 growing season. The average seasonal fluxes for CH4 consumption were the highest at the Forest and Roadside Native Prairie sites (-0.457 mg m**-2 day**-1 and -1.047 mg m**-2 day **-1). The average seasonal fluxes for CH4 production were the highest at the Peterson N-fertilized farm site and the Kluever manure injected site (9.022 mg m**-2 day**-1 and 0.865 mg m**-2 day**-1). Our data indicates that during the 1993 growing season most of our agricultural ecosystem sites were net CH4 producers while our natural ecosystem sites were net CH4 consumers.