CO2 sequestration estimation for the litsea – cassava Agroforestry model in the central highlands of Vietnam
CO2 sequestration estimation for the litsea - cassava Agroforestry model in the central highlands of Vietnamwca2014-1274 Bao Huy 1,* 1Forest Resources and Environment Management, Tay Nguyen University, Buonmathuot, Viet Nam
The Litsea – Cassava agroforestry model has been popularly practiced in the Central Highlands of Vietnam, producing a stable volume and contributing significantly to household income. This model overcomes the shortcomings of mono-cultivation of cassava on land under shifting cultivation; in addition, according to many cycles, the model helps store carbon; therefore, it is significant in reducing the greenhouse effect, which has become a global concern in recent years. In order to estimate the environment value of stored carbon of this model, the experimental method for involves: sample plot, destructive sampling, conducting chemical laboratory tests to determine the stored carbon in the components of the tree; and then using multi-variables to estimate the biomass and stored carbon in the agroforestry models. This procedure forms the basis of predicting the CO2 concentration in woody trees in the agroforestry model according to the age period, the cycle, and different combinations. The cycle of Litsea business varied over the 5-10 year period, while absorbed CO2 in the agroforestry model varied from 25 to 84 tons per hectare. Within cycle of 2 and 3 of this model, maintaining 2-3 shoots/stump of Litsea will have the greatest effect not only on productivity, but also on absorbed CO2 .