Abstract:

To analyze the current situation of carbon storage and carbon sink value in Yunnan Province, based on the data of the 4th Forest Resources Class II survey in Yunnan Province, the arbor forest biomass was estimated by IPCC method, and the AS index was constructed based on the age structure of the forest to assess the forest carbon sequestration potential of Yunnan Province. The results showed that the carbon storage of arbor forests in Yunnan Province was 1433.60 Tg, and the carbon sink value was 11180681.55×10⁴ yuan. The biomass and carbon storage of arbor forests were mainly concentrated in Yunnan pine, oak and other broad-leaved trees. The carbon stocks in the west of Yunnan Province were mainly concentrated in Pu’er City and Diqing Prefecture. The carbon stocks in the west of Yunnan Province were higher than those in the east, and the age structure of the forests showed a single peak with a right deviation. The AS index of Yunnan Province is 1.15, the stand is younger, forests are highly productive, the forest biomass is increasing, and the forest carbon sink potential is large.

Key words: forest carbon sink, AS index, dominant tree species of arbor forest, carbon sink value, crbon sink potential