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Proceedings of the International Academy of Ecology and Environmental Sciences, 2022, 12(4): 352-366
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Article

Assessment of carbon stock and sequestration potential in sub-tropical forests of Darjeeling, eastern Himalaya

Darshana Tolangay, Saurav Moktan
Department of Botany, University of Calcutta, 35, B.C. Road, Kolkata, 700019, West Bengal, India

Received 4 August 2022;Accepted 10 September 2022;Published online 21 September 2022;Published 1 December 2022
IAEES

Abstract
The present study deals with the assessment of species composition, biomass, carbon stock and carbon sequestration potential of sub-tropical forests of Darjeeling, eastern Himalaya. Tree density, basal area, index and diameter class were used to assess the structural attributes of forest trees. The importance value score for the tree varied from 1.803 to 2.665. The Shannon diversity index, concentration of dominance, evenness index and Menhinick richness index were, 3.588, 0.032, 0.948 and 2.566, respectively. The assessment of biomass was based on diameter at breast height, tree height and wood density. Biomass was estimated using generalized allometric equation which was later converted to the carbon stock. The study site stored 33.53 Mg C -1 total carbon stock and 123.048 Mg CO2 ha-1 carbon dioxide equivalent. Schima wallichii was the dominant species in terms of carbon storage. The correlation between aboveground biomass with height and diameter squared height (D2H) showed significant positive correlation whereas, moderate correlation was observed with diameter. Nevertheless, the findings from this study will provide baseline information for carbon pool accounting and climate change mitigation in Himalayan forests.

Keywords sub-tropical;carbon;aboveground;belowground;biomass;sequestration.


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