Abstract
Increase of CO2 concentration in the atmosphere has increasingly become an issue as it causes global warming. Such an increase is partly brought about by change in land use and land cover. The research is aimed at identifying type of cropping system in smallholder coffee plantation in Tana Toraja district that provide the best CO2 sequestration. The CO2 sequestration were analysed by sampling the CO2 content of plant biomass, plant residues, stems, soil organic matters, and undercover plants at varieties of coffee cropping system in Rante Deata village. The best CO2 sequestration is the cropping system of coffee with Gliricidia (Gliricidia sepium) as shading plant (231.25 MT CO2 ha-1), followed by the intercrop of cocoa and coffee with Gliricidia (Gliricidia sepium) and suren (Toona sureni) as shading plant (198.55 MT CO2 ha-1). The least CO2 sequestration is obtained at the cropping system of coffee – clove intercrop without shading plant (137.44 MT CO2 ha-1).
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