The present communication deals with the carbon dynamics in the Himalaya hotspot region. The Himalaya, a mountain range shared by Pakistan, India, Nepal, Bhutan and Myanmar, is one of the biologically richest regions in the world that play an important role as source and sink in global carbon cycle. The purpose of this paper was to review and provide available studies related to carbon sequestration in the Himalayas. The carbon in forest is stored in five different pools viz. above-ground biomass, below-ground biomass, litter, deadwood and soil organic carbon. Estimates of biomass, carbon stock and soil organic carbon contents by almost all forest types including agroforestry systems and plantations in the Himalaya hotspot have been documented in this communication. The net rate of carbon sequestrated by forest was reported to be 2.4 ±0.4 Pg C yr-1 on a global scale. The Indian Himalayan Region constitutes about 5.4 billion tonnes of C and sequesters about 65 million tonnes of C yr-1. We analysed more than 135 peer-reviewed journal articles related to biomass and carbon sequestration. The review identifies that the studies estimated 3697.05, 3898.10 and 4235.05 tonnes carbon per hectare for Western, Central and Eastern Himalayan region respectively. The research on the biomass/carbon estimation received attention as early as 1980s, but increased gradually after 2001. These findings would contribute to policy-makers with useful information for mitigation of CO2 emissions.
Biomass, Carbon dioxide, Carbon sequestration, Forests, Himalaya hotspot
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