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The Effect Estimation of Heavy Metals on the Microbial Activity during Leaf Litter Decomposition  

Shim, Jae-Kuk (Department of Life Science, Chung Ang Univ.)
Shin, Jin-Ho (Department of Civil & Environmental Engineering, Kongju National Univ.)
Yang, Keum-Chul (Department of Civil & Environmental Engineering, Kongju National Univ.)
Publication Information
Korean Journal of Environment and Ecology / v.25, no.6, 2011 , pp. 887-892 More about this Journal
Abstract
This study was to find out influence of heavy metal concentration in plant on microbial activities during decomposition of Artenmisia princeps var. orientalis and Equisetum arvense collected from an abandoned mine and control site in Cheongyang-gun Chungcheongnam-do. Microbial respiration rate showed the highest value at the time of the first collection, and then tended to decline over time. The highest microbial respiration rate appeared in leaf litters with low heavy metal contents, and A. princeps var. orientalis and E. arvense collected and decomposed at the control site showed the fastest decomposition rate. For both A. princeps var. orientalis and E. arvense, litters with low heavy metal content appeared to have higher microbial biomass. There was apparent quantitative correlation between decomposition rate and cumulative respiration rate of leaf litters, and between decomposition rate and microbial biomass of leaf litters. Thus, the study result showed that leaf litter with higher heavy metal content had a negative impacts on the growth and activity of microbial decomposer during decomposition processes.
Keywords
DECOMPOSITION RATE; MICROBIAL BIOMASS; MICROBIAL RESPIRATION;
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Times Cited By KSCI : 4  (Citation Analysis)
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