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The present study involves the discovery of quality of soils associated with dump mines and native forest encompassing the Kakari mine, a coal mining site in Sonbhadra, to distinguish the effect of coal mining on associated soil ecosystem. Soil ecophysiological indicator of the site was analyzed in terms of floral diversity by method of quadrat analysis, which revealed that dumps were devoid of any floral community whereas the natural forest around the mines was enriched with a number of plant species. Importance value index (IVI) was calculated and with respect to their IVI index the tree species viz., Acacia mangium (23.17, 24.48 & 26.81) and Acacia catechu (20.34, 22.10 & 25.36) were found to be the most dominant species. Soil enzymatic and physico-chemical analysis were analyzed by standard method and the result emphasized that dump soils possess poor enzymatic activity and acidic pH due to the decomposition of waste material in dumps which eventually affects the microbial diversity of soil and its fertility. The plant growth promotion (PGP) and stress tolerance characteristics of bacterial isolates were further examined so that the potential isolates will be utilized further to reclaim and remediate soil property of degraded soils. The promising isolates were characterized by BIOLOG identification system and isolate NU36 and NU25 showed greatest similarity with Pseudomonas sp. and Acinetobacter sp. respectively. Based on the potential to produce plant growth promoting substances and withstand in stressed environment the most promising isolates will be used to remediate soil and reclaim soil characteristics.

Soil ecophysiological and microbiological indices of soil health: a study of coal mining site in sonbhadra, uttar Pradesh