Chinese fir ecosystem plays an important role in carbon storage of whole forest ecosystem in China because of its tremendously solid carbon potential. The carbon storage and density of Chinese fir forest vegetation in Hunan Province were estimated based on the data from the forest resource inventory (2003 ～2010) and the model of forest biomass and volume. The results show that the carbon storage of Chinese fir increased from 26.22 ×1061 to 33.06 × 106t and then decreased to 32.92×106t between 2003 and 2010. The carbon storage of young growth, immature timber decreased from 2003 to 2010, while the carbon storage of near-mature plantation, mature forest and overmature forest showed a rising trend. During the study period, the carbon storage of timber forest and shelter-forest were 62.3%～80.5%, 11.6%～31.9% of total Chinese fir forest carbon storage, respectively. The dynamic of carbon storage in timber forest and shelter-forest will greatly affect the function of whole Chinese fir plantations as carbon source and sink. Among 14 prefectures, Huaihua possessed the largest carbon storage of 6.45 × 106t in 2010, while the smallest carbon storage occurred in Xiangtan city, only 0.34× 106t. The carbon density of Chinese fir in Hunan province increased 1.68 t/hm2 from 10.37 t/hm2 in 2003 to 12.05 t/hm2 in 2010, which was also much lower than the mean carbon density of China forest vegetation (41.32 t/hm2). The carbon density of Chinese fir showed a generally increasing trend with increasing latitude, and there was no obvious rule occurred from east to west in Hunan province.
China fir forest vegetationcarbon storageHunan province
NETL
NSTL
维普
万方数据
