Abstract:With the data of 42 sample trees of carbon storage and biomass investigation data of fixed sample plots of larch plantation from 2006 to 2007, we studied the carbon storage compatibility model of larch was builded and the regular of carbon storage in different site conditions. The model built by carbon storage directly had the higher precision. The larch plantation atⅠ, Ⅱ, Ⅲ level site conditions had a carbon storage maturity age of 37.8, 39.2 and 42.5 years. Research suggests that the carbon storage of same stand age rises with the increascent of site condition. The carbon storage of same site condition increased with the increase of the age. The average carbon accumulation and successive year carbon accumulation increased first, and then decreased. The increment of carbon would change after some years, and it would decrease with the increase of the age.