Assessment of Carbon Storage and Monetary Valuation of Teak Forests in the Tropical Dry Deciduous Forests of Adilabad District, Telangana, India
摘要
Forests play a critical role in climate change mitigation by storing atmospheric carbon in biomass and soil pools, particularly in tropical dry deciduous ecosystems that remain underrepresented in carbon accounting studies. Teak (Tectona grandis) forests are ecologically and economically important in India, yet site-specific assessments of carbon stock and associated economic value are limited. This study aimed to quantify vegetation and soil carbon stocks of teak-dominated forests in Adilabad District, Telangana, and to estimate their economic value under prevailing carbon market prices. A total of 49 sample plots (20 m × 20 m) were established across three forest divisions using systematic sampling. Tree biomass was estimated using volume-based methods and IPCC default factors, while soil organic carbon was determined at 0–15 cm and 15–30 cm depths using the Walkley–Black method. Total carbon stock (tree + soil) was calculated as the sum of vegetation and soil carbon and converted to CO2 equivalents (CO2e) using a factor of 3.667. Mean Total carbon stock (tree + soil) ranged from 192.8 to 243.7 t C ha−1 across divisions, corresponding to 707.1–893.7 t CO2e ha−1. Utnoor division recorded the highest biomass (477.5 t C ha−1) and carbon stock (238.76 t C ha−1). Soil organic carbon was significantly higher in surface layers (0.92%) compared to subsoil (0.43%). At a carbon price of US $90 t−1 CO2e, the estimated economic value ranged from US $63,637 to US $80,434 per hectare. The findings highlight the substantial carbon storage capacity of teak forests in tropical dry deciduous regions and support their integration into forest-based climate mitigation and carbon market strategies under India’s Nationally Determined Contributions.