Huang Cong-de, Zhang Jian, Yang Wan-qin, Zhang Guo-qing
College of Forestry and Horticulture, Sichuan Agricultural University, Ya' an 625014, Sichuan, China.
Ying Yong Sheng Tai Xue Bao. 2008 Aug;19(8):1644-50.
By using forest inventory data in combination with plot measurement, the characteristics of carbon density, stock, and partitioning in artificial forest ecosystem in Sichuan Province of China were studied. The results showed that the carbon density in this forest ecosystem was averagely 161.16 Mg C x hm(-2), being ranked in the order of soil layer (141.64 Mg C x hm(-2)) >tree layer (17.95 Mg C x hm(-2)) >litter layer (1.06 Mg C x hm(-2)) >shrub layer (0.52 Mg C x hm(-2)), and the total carbon stock was 573.57 Tg C, with 63.88 Tg C, 1.836 Tg C, 3.764 Tg C, and 504.09 Tg C, accounting for 11.14%, 0.32%, 0.66%, and 87.88% of the total in tree layer, shrub layer, litter layer, and soil layer, respectively. The carbon density and stock in different artificial forest ecosystems varied from 75.50 Mg C x hm(-2) to 251.74 Mg C x hm(-2) and from 1.21 Tg C to 99.44 Tg C, with the highest and lowest values observed in soil layer and shrub layer, respectively. Comparing with other regions in China, Sichuan Province had a lower carbon density in the tree layer of artificial forest ecosystem, due to the higher proportion of young and middle age forest stands, which implied that a proper management of artificial forest could increase the carbon sequestration in forest ecosystem of Sichuan. To monitor the carbon stock in artificial forest ecosystem at ecosystem level could be helpful to the improvement of the precision of forest carbon sequestration evaluation.
利用森林资源清查数据并结合样地实测，对中国四川省人工林生态系统的碳密度、碳储量及分配特征进行了研究。结果表明，该森林生态系统的碳密度平均为161.16 Mg C·hm(-2)，其排序为土壤层(141.64 Mg C·hm(-2))＞乔木层(17.95 Mg C·hm(-2))＞凋落物层(1.06 Mg C·hm(-2))＞灌木层(0.52 Mg C·hm(-2))，总碳储量为573.57 Tg C，其中乔木层、灌木层、凋落物层和土壤层的碳储量分别为63.88 Tg C、1.836 Tg C、3.764 Tg C和504.09 Tg C，分别占总碳储量的11.14%、0.32%、0.66%和87.88%。不同人工林生态系统的碳密度和碳储量分别在75.50 Mg C·hm(-2)至251.74 Mg C·hm(-2)以及1.21 Tg C至99.44 Tg C之间变化，最高值和最低值分别出现在土壤层和灌木层。与中国其他地区相比，四川省人工林生态系统乔木层的碳密度较低，这是由于中幼龄林分比例较高，这意味着对人工林进行适当管理可以增加四川森林生态系统的碳固存。在生态系统水平上监测人工林生态系统的碳储量有助于提高森林碳固存评估的精度。
