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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jan 2014, 35 (1)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Diversity and composition of vegetation on aged coalmine

overburden dumps in Sonepur Bazari area, Raniganj, West Bengal

 

Chanchal Kumar Biswas1*, S. P. Mishra2 and Ambarish Mukherjee3

1Department of Botany, Banwarilal Bhalotia College, Asansol-713 303, India

2School of Life Science, University of Sambalpur, Burla-768 019, India

3Department of Botany, University of Burdwan, Burdwan-713 104, India

*Corresponding Author E-mail: ckbbot@yahoo.com

 

 

 

 Publication Data

Paper received:

25 May 2012

 

Revised received:

08 November 2012

 

Accepted:

24 December 2012

 

Abstract

Plant communities get disturbed due to open cast coal mining as large amount of overburden is dumped at the nearby areas of the mines. The vegetation on different age series of six overburden dumps (0, 4, 8, 12, 16 and 20 years) were analyzed during the post monsoon period of 2011 in Sonepur Bazari area, West Bengal, India. The plant species and other relevant criteria were recorded using randomly placed quadrats. Species richness, Diversity indices and Importance value index (IVI) were calculated using standard methods.? Among monocots, the IVI of Saccharum spontanium was highest at all the over burden dumps. Among dicotyledons, Croton bonplandianum was the most important on OBD-4 and 8.? On OBD-12 both Croton bonplandianum and Lantana camara were somewhat equally important. On OBD-16, Croton bonplandianum, Tephrosia perpurea and Evolvulus nummularius were most important where as on OBD-20 maximum importance value was shown by Chromalaena odorata and Hyptis suaveolens. Among tree species Leucaena leucocephala and Zizyphus mauritiana had highest IVI value on OBD-12 and Butea monosperma, Dalbergia sissoo and Lagerstoemia strictus on OBD-16. Finally Butea monosperma and Dalbergia sissoo showed highest IVI values on OBD-20. Diversity indices and species richness of non- grasses species was found getting increased with the age of OBD. Interestingly the grasses, specially Saccharum spontanium, were seen to grow as pioneers and got established? under the prevailing? high environmental adversity. On the contrary, other herbaceous and tree species were seen getting established at later stages of succession.

 

 Key words

Coalmine, Overburden dumps, Plant communities

 

 

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