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KMID : 0613820100200101468
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Journal of Life Science
2010 Volume.20 No. 10 p.1468 ~ p.1475
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Sulfate Reduction of Rice Paddy, Foreshore, and Reservoir Soil
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Kim Min-Jeong
Park Kyeong-Ryang
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Abstract
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Sulfate reduction rates (SRR) using ³?SO₄?², sulfide producing rates (SPR) using gas chromatography, the number of sulfate reducing bacteria (SRB) using the most probable number (MPN) method, and soil components (moisture, ammonium, total nitrogen, total organic carbon, total carbon, total inorganic phosphorus, total phosphorus, and sulfate) using standard methods in the organic/conventional rice paddy soils, cleaned/polluted reservoir soils, and cleaned/polluted foreshore soils were studied with the change of seasons. The average SRR was more related to the number of SRB and soil components (especially nitrogen and phosphorus) than sulfate concentration. SRR was also recorded to be highest in October soil samples. However, SPR was higher in foreshore soils containing a high concentration sulfate than in fresh water soils, and it was also recorded to be higher in the polluted areas than in clean areas. From these results, we can conclude that the SRR and SPR of anaerobic environments were affected by the number of SRB, soil components and temperature.
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KEYWORD
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Anaerobic soil, most probable number, soil components, sulfate reducing bacteria, sulfate reduction
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