Abstract:

The biomass distribution and carbon storage were studied of three age classes of Cunninghamia lanceolata ecological service forest in Zhejiang Province.The tree-layer biomass of C.lanceolata dominant forest was over 47 t·hm^-2 before 10 years by high density planting and management.At mid-aged （11-20 a） and mature （21-30 a）stage，however，tree-layer biomass of C.lanceolata dominant forest did not significantly increase，and was lower than the mixed forest containing C.lanceolata at the same age-class.The tree-layer biomass of the mixed forest containing C.lanceolata increased markedly with age，and the mid-aged forest was 147% higher than young forest and mature forest was 28.1% higher than mid-aged forest.Carbon storage could increase by 0.84 t·hm^-2 per year to 0.21 t·hm^-2 per year if C.lanceolata forest was transformed into a mixed forest.

Key words: Cunninghamia lanceolata, biomass, carbon sequestration, mixed forest, regression model