中文摘要：

利用森林资源二类调查汇总数据和标准地实测数据,研究吉林省森林生态系统的碳密度、碳储量及其组分和分布特征.结果表明：吉林省森林生态系统碳储量为1827.293TgC,其中乔木层、灌草层、枯落物层和土壤层的碳储量分别为439.152、5.195、45.600和1330.466TgC,分别占总碳量的24.1%、0.3%、2.5%和73.1%.吉林省森林生态系统碳密度为225.304MgC.hm-2,各层碳密度的大小顺序为土壤层（164.666MgC.hm-2）〉乔木层（54.352MgC.hm-2）〉枯落物层（5.644MgC.hm-2）〉灌草层（0.643MgC.hm-2）.不同类型森林生态系统碳储量在9.357～959.716TgC,碳密度在180.648～254.627MgC.hm-2之间,各林型分配特征表现为土壤层最大、灌草层最小.全省森林生态系统碳储量和碳密度的空间分布总体上为东部山区高、中西部平原地区低.吉林省森林中中龄林分比重大,若对现有森林加以更好的管理,可以增加其碳吸存潜力.

英文摘要：

By using forest resources inventory data and field investigation data,this paper studied the carbon storage,density,and distribution characteristics in forest ecosystems in Jilin Province of Northeast China.The total carbon storage in the forest ecosystems was 1827.293 Tg C,and the carbon storages in arbor layer,shrub-grass layer,litter layer,and soil were 439.152 Tg C,5.195 Tg C,45.600 Tg C,and 1330.466 Tg C,accounting for 24.1%,0.3%,2.5%,and 73.1% of the total,respectively.The carbon density in the forest ecosystems was 225.304 Mg C·hm-2,with 54.352 Mg C·hm-2 in arbor layer,0.643 Mg C·hm-2 in shrub-grass layer,5.644 Mg C·hm-2 in litter layer,and 164.666 Mg C·hm-2 in soil.Different types of the forest ecosystems had a carbon storage varied from 9.357 Tg C to 959.716 Tg C and a carbon density ranged from 180.648 Mg C·hm-2 to 254.627 Mg C·hm-2,with the highest values in soil and the lowest values in shrub-grass layer.Overall,the carbon storage and density in the forest ecosystems were greater in eastern mountainous area than in central and western plains.In the Province,middle-aged forests had a greater proportion than the forests in other age classes,and thereby,a proper management of the present forests could increase the carbon sequestration of the forest ecosystems.