基于福建省1974—2018年共9期的森林资源清查数据，采用生物量转换因子法和平均生物量法，分析福建省森林碳储量动态变化，并对2014—2018年乔木林各优势树种（组）的碳储量情况进行分析。结果表明：1974—2018年，福建省森林总体碳储量从13 539.64×104 t增长到33 962.34×104 t，平均碳密度从25.75 t·hm^-2增长到39.86 t·hm-2。乔木林中，幼龄林和中龄林的面积较大，而近熟林、成熟林和过熟林的面积逐期增加；中龄林的碳储量最高；成熟林和过熟林的碳密度整体较大。天然林和人工林的面积、碳储量和碳密度逐期增加，且天然林各指标均高于人工林。2014—2018年，天然林中阔叶混交林的碳储量最高，锥栗〔Castanea henryi (Skan) Rehder et E. H. Wilson〕的碳密度最大；人工林中杉木〔Cunninghamia lanceolata (Lamb.) Hook.〕的碳储量最高，木麻黄（Casuarina equisetifolia Linn.）的碳密度最大。综上所述，福建省森林有较高的碳储量和碳汇能力，阔叶混交林和杉木是乔木林碳储量的主要贡献者，因此，可通过改善这2个树种（组）的林龄结构并加强经营管理来提升福建省森林碳汇能力；并通过合理的采伐和种植策略，优化幼龄林和中龄林的比例，以提高福建省森林碳汇能力，保持成熟林和过熟林面积占比，以维持福建省较高的森林碳密度。

Based on the forest resource inventory data of 9 periods in Fujian Province from 1974 to 2018, the dynamic changes of forest carbon storage in Fujian Province were analyzed by using the biomass conversion factor method and average biomass method, and the carbon storage of each dominant tree species (group) in arboreal forest from 2014 to 2018 were analyzed. The results show that from 1974 to 2018, the total forest carbon storage in Fujian Province increases from 13 539.64×104 t to 33 962.34×104 t, and the average carbon density increases from 25.75 t·hm-2 to 39.86 t·hm^-2. In the arboreal forest, the areas of young and halfmature forests are relatively large, while those of near-mature, mature, and overmature forests have been increasing period by period; the carbon storage of half-mature forest is the highest; the carbon densities of mature and overmature forests are generally large. The area, carbon storage, and carbon density of natural forest and plantation have been increasing period by period, and the indexes of natural forest are higher than those of plantation. From 2014 to 2018, the carbon storage of broadleaved mixed forest is the highest and the carbon density of Castanea henryi (Skan) Rehder et E. H. Wilson is the largest in natural forest; the carbon storage of Cunninghamia lanceolata (Lamb.) Hook. is the highest and the carbon density of Casuarina equisetifolia Linn. is the largest in plantation. In conclusion, the forests in Fujian Province have high carbon storage and carbon sink capacities, and broad-leaved mixed forest and C. lanceolata are the main contributors to the carbon storage of arboreal forest, therefore, it is suggested that through improving the age structure of these two tree species (group) and strengthening the management to enhance the forest carbon sink capacity in Fujian Province; furthermore, through reasonable logging and planting strategies to optimize the proportion of young and half-mature forests for enhancing the forest carbon sink capacity in Fujian Province, and to maintain the area proportions of mature and overmature forests for sustaining the high forest carbon density in Fujian Province.