Abstract:

The biomass, carbon content, carbon storage and their vertical distribution were measured in 32-year old artificial stand of Phoebe bourmei. The results showed: The mean biomass is 174.33 t\5hm^-2, in which the arber layer is 166.73 t\5hm^-2 accounting for 95.6%. The carbon content of stem, bark, branch, leaf, roof, shrub, herb, litchen and litter is 0.576 9, 0.465 4, 0.523 2, 0.495 8, 0.493 1, 0.498 9, 0.473 3, 0.414 3 and 0.388 2 gC\5g^-1, respectively. The mean carbon content of soil which reduces gradually with the depth is 0013 9 gC\5g^-1. The total carbon storage of P. bourmei stand ecosystem, is 227.59 t\5hm^-2, is devided into soil layer (0～80 cm) accounting for 58.40% (133.88 t\5hm^-2), tree layer accounting for 40.13% (91.33 t\5hm^-2 ), herb accounting for 0.76% (1.71 t\5hm^-2 ), litter accounting for 0.29% (0.66 t\5hm^-2 ), litchen accounting for 0.28% (063 t\5hm^-2 ) and shrub accounting for 0.17% (038 t\5hm^-2 ). The tree layer productiong is 6669 1 t\5hm^-2 a^-1  which accounts for 77.62% of the mean net production (8.570 6 t\5hm^-2 a^-1). The tree layer sequestration is 3573 6 t·hm^-2a^-1 which accounts for 84.01% of the mean annual carbon sequestration (4.253 6 t·hm^-2 a^-1).

Key words: Phoebe bourmei artificial stand, biomass, carbon content, net primary productivity, carbon storage