Abstract: The carbon coefficient of Picea obovata Ledeb in Xinjiang was analyzed by using hypothesis testing and regression analysis.The research conclusions are as follows:the upper part of the trunk and rhizome of carbon coefficient is greater than the other parts of the same organ;The average carbon coefficient of the ground is 0.4565;The average carbon content in different organs of the whole plant is 0.4619,and the order by CCF from the largest to the smallest is stem bark,foliage,branch,root,and stem wood;The relative stability of various organs and the whole plant carbon coefficient is not changed with the increase of diameter at breast height,tree height,age and other factors.According to different tree species,the corresponding measured carbon coefficient shall be used.

Key words: Picea obovata, carbon coefficient, regression analysis, Xinjiang