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The Application Of Microbial Indices As Reference Standards To Improve Nemerow Index Method In The Monitoring And Assessing Of Soil Heavy Metal Pollution | 10322
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The application of microbial indices as reference standards to improve Nemerow index method in the monitoring and assessing of soil heavy metal pollution
2nd International Conference on Biodiversity & Sustainable Energy Development
The Nemerow index was based on the pollutant content and environmental standards, which do not consider the real effects
of heavy metals to living creatures. Soil microbial community is very sensitive to environmental changes and their behavior
can be properly investigated to reflect the effect of heavy metals. In this study we introduced microbial indices in Zhaoyuan gold
deposit and Zibo iron deposit in Shandong Province to improve the traditional Nemerow index. Several key microbial indices
were measured and given ordination by ecological methods, and then their weighting values in the ordination were used as
reference standards. The Nemerow index was improved by integrating microbial characteristics, which directed to reflect the
influences heavy metal. Given consideration to real influences to living creatures, the pollution index can be quite different
from what it was; meanwhile, C
mic
, BAS and key microbial species can all be used as references to modify the Nemerow index.
We found the modification of Nemerow index showed different trends in Zhaoyuan gold deposit and Zibo iron deposit because
different microbial indices were chosen. The results clearly indicated the potentiality of microbial indices to reflect the real effect
of pollution to life and the weighting methods calculated by ordination could work well. It is feasible and meaningful to use
microbial parameters to supply complemental information to traditional environmental quality index. To further improve the
soil environmental quality evaluation system, key microbial indices should be studied and the regulation of how they reflect
environmental changes should be well considered.
Biography
Jiu-Lan Dai has completed her Ph.D. at the age of 29 years from Shandong Agricultural University and Research Centre for Eco-environmental
Sciences, Chinese Academy of Sciences, and postdoctoral studies from Shandong University School of Life. She is mainly engaged in the research
on soil microbial ecology, soil pollution ecology, soil biogeochemistry and pollutants cycling in terrestrial ecosystems. She has published 34 papers
in reputed journals and has been serving as a reviewer for several journals
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