Temporal and Spatial Distribution Pattern of Carbon Sink in Forest Vegetation of Jiangxi Province

Abstract

Forest ecosystem has a huge carbon sink function and plays an inhibitory effect on global climate warming. The carbon storages of Jiangxi province forest vegetation between 1984 and 2003 were estimated by an age-based volume-to-biomass method according to the forest resource inventory data of the homologous periods. The results showed that the total vegetation carbon storage of Jiangxi province forest vegetation in the four periods was 101.86TgC, 124.1TgC, 157.3TgC and 188.78TgC respectively. The total vegetation carbon storage of Jiangxi province forests had increased 86.92TgC and accumulated about 4.35TgC per year from 1984 to 2003. The average forest vegetation carbon density was between 22.77t/hm2 and 25.94t/hm2. The spatial pattern of forest vegetation carbon storage in Jiangxi province was studied according to forest resources survey data during 10th five-year plan. The results showed that the largest forest vegetation carbon storage was the Ganzhou city (62.36TgC) and the least was Nanchang city (1.72TgC). The average carbon intensity of all city forest vegetation in Jiangxi province was roughly from 20.641t/hm2 to 32.930t/hm2. The smallest carbon density was Nanchang city (20.641t/hm2) while the biggest was Jingdezhen city (32.930t/hm2).