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Assessment and modelling of vegetation biomass in a major bauxite mine of Eastern Ghats, India

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Abstract

Large-scale surface mining are the major causes for ecological disaster at the landscape level, but ecological restoration in post mining areas offers an opportunity to re-develop an ecosystem. The present research programme was undertaken in Panchapatmali Bauxite Mines in Koraput district of Odisha which is one of the biggest mines in Eastern Ghats ecoregion. The above ground biomass (AGB) and soil parameters inside and outside the mines (natural forest) were compared and their interrelationships were also tested at 1% level of significance. For the three dominant species Pinus insularis, Eucalyptus hybrid and Samenia saman, the regression coefficient (R2) values for AGB were significant with respect to DBH (R2 = 0.80–0.90), height (R2 = 0.35–0.76) and with basal area (R2 = 0.90–0.96). Species wise, maximum biomass was shown by Pinus insularis followed by Eucalyptus hybrid and Samenia saman which reveals that exotic species have overruled the indigenous species in the plantation areas. An accurate cokriging geospatial model with minimum errors predicted the AGB values to range from 45.6 to 416.4 t/ha compared to the observed biomass range 5.90–507.06 t/ha through the developed regression equation y = 1.003x + 0.24. The overall AGB of the reclaimed area was at par with the natural forest outside the mines. Increasing the pH level of soils, planting indigenous species and increasing green ground cover species will have lesser negative competition with the trees in the reclaimed zone that can restore the fragile ecosystem.

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Acknowledgements

The authors duly acknowledge the financial support received from NRSC Hyderabad project (Sanction No. NRSC/FEG/VCP dt 03/07/2015), constant support of GM (Mines) NALCO, Damanjodi for providing appropriate permissions in the field. The second author is grateful to UGC for providing Non-Net fellowship and last author is grateful to DST-INSPIRE for providing fellowship (Sanction No. DST/INSPIRE Fellowship/2015/IF150127 dated 10.04.2015) for undertaking the research.

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The authors duly acknowledge the financial support received from NRSC Hyderabad project (Sanction No. NRSC/FEG/VCP dt 03/07/2015).

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Correspondence to Kakoli Banerjee.

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Banerjee, K., Sahoo, C.K. & Paul, R. Assessment and modelling of vegetation biomass in a major bauxite mine of Eastern Ghats, India. Model. Earth Syst. Environ. 7, 2341–2361 (2021). https://doi.org/10.1007/s40808-020-01004-4

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  • DOI: https://doi.org/10.1007/s40808-020-01004-4

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