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India is voluntarily committed towards reducing carbon emission. Rubber plantation could be an important means for carbon sequestration at state and national level. Tripura holds second position as rubber grower state in India, spreading over a 72273 hectare areas. Present study designed to estimate the carbon storage potential, sequestration rate and some selected edaphic properties under four different aged rubber plantations viz. HB05, HB10, HB15 and HB20, following stratified random sampling methodology. Total, 40; 100×10 m transects were laid for estimation of biomass carbon stock and transects were further subdivided into five equal quadrates 20×10 m sized for sampling soil. The stand structural variables like mean girth size, height, basal area, tree carbon and overall carbon stock significantly varied among the different aged rubber plantations. The periodic annual increment in terms of carbon sequestration was estimated at the rate of 2.97, 3.30, 3.14 and 2.82 (Mg C ha-1 yr-1). The result indicated that total carbon stock in rubber plantation was 202.48 Mg ha-1, out of which tree carbon shared 41.85 and Soil Organic Carbon (SOC) 160.71 Mg ha-1 respectively. SOC did not show any significant variation along the plantation ages. The study suggested that the potentiality of carbon sequestration of rubber plantation in Tripura has immense scope for future carbon credit and incentives.

Carbon Sequestration Potential and Edaphic Properties Along the Plantation Age of Rubber in Tripura, Northeastern India