期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 47, 期 3, 页码 277-284出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/eesa.2000.1963
关键词
heavy metals; methane oxidation; carbon dioxide production; rice soils; soil microbial population; methanotrophic bacteria
In a laboratory incubation study, the effect of select heavy metals on methane (CH4) oxidation in tno rice soils was investigated under two moisture regimes. Heavy metals differed in their effect on CH4 oxidation in both soils under the two water regimes. Cr significantly inhibited CH4 oxidation in the alluvial soil at 60% moisture holding capacity, while Cu stimulated the process, On the contrary, Zn inhibited CH4 oxidation in both alluvial and laterite soils only under flooded conditions. Application of rice straw alleviated the inhibitory effect of heavy metals on CH4 oxidation and CO2 production. Inhibition of CH4 oxidation in the alluvial soil was related to the methanotrophic bacterial population in Cr- and Zn-amended alluvial soil. (C) 2000 Academic Press.
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