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首页> 外文期刊>International journal of applied environmental sciences >Carbon Stock in Upland Agroforestry System, Uttaradit Province, Thailand
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Carbon Stock in Upland Agroforestry System, Uttaradit Province, Thailand

机译：Carbon Stock in Upland Agroforestry System, Uttaradit Province, Thailand

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The study site is located in northern of Thailand with an annual rainfall from 5-260 mm. mean rainfall 1,371 mm. / year. The soils, categorized as Clayey soils series group and Utt soils series (FAO classification), on five dominate species systems in fanners' fields upland agroforestry regions are mainly located in lower northern, Thailand, where the main vegetations are known as durian (Durio zibethinus L.), mangosteen (Garcinia mangostana), lansium (Lansium domesticum Sen.), longkong (Lansium domesticum Corr.) and mixed deciduous forest. Carbon stock in the biomass was estimated by allometric equations and soil carbon stock was determined at three depths surface soil (0-10 cm), crop root zone (10-40 cm) and tree root zone (40-100). Biomass carbon stock ranged from 440 to 700, 360 kgC ha~(-1), and total carbon stock (biomass carbon and soil carbon, 0-100 cm depth) from 8,458.60 to 701,131.30 kgC ha~(-1), indicating that a major portion of the total amount of carbon in the system is stored in the soil. Traditional parkland agroforestry systems had relatively larger carbon stock than the improved systems, but they seemed to have only limited potential for sequestering additional carbon. On the other hand, the improved systems showed higher potential for sequestering carbon from the atmosphere. The results show that soil carbon is a substantial component of the total carbon stock of the system, suggesting the importance of considering soil carbon in carbon sequestration calculations, which at present is not recognized by Kyoto Protocol. Overall, agroforestry systems have a positive potential to sequester carbon in both aboveground and belowground. Although the carbon sequestration amount is not as large as other sequestration amount is not as large as other sequestration project such as mono-species plantation agroforestry can also provide various other land uses and environmental.

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