This study aimed at assessing carbon stocks of different argoforestry land uses in the buffer zone of Ba Be National Park, which was funded and assisted by International Centre for Research in Agroforestry (ICRAF). In the study, the author used Rapid Carbon stock Appraisal method, introduced by Hairiah et al. (2001). The study focussed on estimating carbon pools in 1) woody trees, 2) understory species, 3) dead wood and litter, and 4) soil layers of the land uses. Research results showed that aboveground carbon stock of home gardens scored the highest (33.59 ton/ha), while shifting cultivation systems showed the lowest carbon stock (7.71 ton/ha). Below ground carbon stocks including carbon in roots and fine litter, and soil profiles (0 - 20 cm) of the secondary forests, home gardens, fruit gardens and shifting cultivation systems scored 49.97 ton/ha, 48.04 ton/ha, 32.70 ton/ha and 23.74 ton/ha, respectively. Total carbon stocks of secondary forests and home gardens were quite similar, which showed 80.40 ton/ha and 81.63 ton/ha, respectively
while the carbon stocks of fruit gardens and shifting cultivation systems were 47.74 ton/ha and 31.45 ton/ha, respectively. The results indicated that there are significant carbon losses/gains if land conversion from the secondary forest and home garden into the fruit garden and shifting cultivation, and conversely.