Evaluation of fertility indicators associated with arsenic-contaminated paddy fields soil
| Autor: | Sanjay Dwivedi, Praveen Khare, Swapnil Pandey, Alok Lehri, Mohammad Haneef Khan, Shashank Mishra, Puneet Singh Chauhan, Sankalp Misra, Vijaykant Dixit |
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| Rok vydání: | 2017 |
| Předmět: |
Pollution
Irrigation Environmental Engineering media_common.quotation_subject Soil biology 04 agricultural and veterinary sciences 010501 environmental sciences Contamination complex mixtures 01 natural sciences Soil quality Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental Chemistry Environmental science Paddy field Soil fertility General Agricultural and Biological Sciences Groundwater 0105 earth and related environmental sciences media_common |
| Zdroj: | International Journal of Environmental Science and Technology. 15:2447-2458 |
| ISSN: | 1735-2630 1735-1472 |
| Popis: | Emerging environmental issues related to heavy metal contamination in rice draw great concern about the soil quality of paddy farming lands irrigated with groundwater. Investigating the functioning of soil microorganisms exposed to heavy metal contamination is imperative for agricultural soil manipulations. The current study accentuates the influence of heavy metals on microbial activity and community composition in arable soil of West Bengal State of India. The result revealed that the fertility indicators (activity of all soil enzymes) and growth-limiting factors (soil N and P) were negatively correlated with the heavy metal stress except the soil total organic content which demonstrated significant positive correlation with the heavy metals. In case of functional diversity of soil, all the considered diversity indices exhibited no specific pattern along with the availability of heavy metals. Further, despite the heavy metal contamination, we observed a very complex and indifferent pattern of bacterial community composition along the heavy metal contamination sites. Overall, we found that γ-Proteobacteria had been the most abundant bacterial community followed by Actinobacteria, Firmicutes, β-Proteobacteria and α-Proteobacteria. Commemorating all the results, we can infer that arsenic and other heavy metal contamination is deteriorating the soil quality and hence warrants immediate attention of concerned soil scientist and agronomists. |
| Databáze: | OpenAIRE |
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