| Summary: | This study aims to assess the carbon storage capability of dominant vegetative land covers in Thailand by estimating
biomass, biomass carbon and soil carbon stocks. Above-ground biomass was estimated from allometric equation or actual
raw yield. Soil organic carbon was analyzed according to the Chromic acid titration method. Results show that above-ground
biomass carbon for irrigated rice, sugarcane, mature Para rubber, degraded rain forest and mixed deciduous forest were 0.8-
1.3, 11.1, 91.5, 56.6 and 60.5 tonne C ha-1, respectively; whereas topsoil carbon at 0-30 cm were 14.9-21.3, 11.3-13.8, 34.2, 54.6
and 77.7-136.9 tonne C ha-1, respectively. Additional studies on the roles of leaf litters involving soil carbon and effects of
agricultural practices on carbon storage capability should be considered. Furthermore, advantages of bio-fuel over the lost
organic carbon in agricultural systems and decline in crop yield could be also taken into account.
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