3种相思人工林生态系统碳贮量及分配  

The carbon storage and distribution in three Acacia plantations

作　　者：潘辉[1] 黄石德[1] 洪伟[2] 朱洪如[2] 张志鸿[3] 林捷[1] 

机构地区：[1]福建省林业科学研究院,福建福州350012 [2]福建农林大学林学院,福建福州350002 [3]平和天马国有林场,福建漳州363704

出　　处：《福建林学院学报》2009年第1期28-32,共5页Journal of Fujian College of Forestry

基　　金：国家“十一五”科技支撑项目子专题基金资助项目(2006BAD03A0604);国家林业局南方山地用材林培育重点实验室基金资助项目

摘　　要：在平和天马国有林场相思引种优选区选取3种相思人工林,进行生态系统各组分含碳率、碳贮量和分配特征的比较。结果表明,3种相思人工林乔木层各器官的含碳率介于45%-50%之间,卷荚相思林和黑木相思林乔木层各器官碳贮量表现为干>根>皮>枝>叶,马占相思林为干>根>皮>叶>枝。卷荚相思林、黑木相思林和马占相思林下植被层平均含碳率分别为42.29%、42.78%和41.26%,明显低于相应的乔木层。卷荚相思林、黑木相思林和马占相思林生态系统碳贮量分别为110.06、124.46和88.86 t.hm-2,其中矿质土壤层贡献最大,依次占68.20%、77.11%和74.69%;乔木层碳贮量次之,依次占29.04%、21.26%和22.14%;而林下植被层碳贮量的贡献最小,分别仅占0.70%、0.33%和1.34%。Forests are main parts of terrestrial ecosystem, 80% and 40% of the aboveground and belowground global carbon stocks. The research objects were selected at Tianma national forest station in Fujian. The carbon content, carbon storage and distribution in different Acacia plantations were studied. The results were as follows ： the carbon content of each organ for tree layers was about 45% -50% in three Acacia plantations. The order of carbon storage for the A. concinnatai and the A. melanoxylon were the trunk 〉 the root 〉 the bark 〉 the branch 〉 the leaf and for the A. mangiun was the trunk 〉 tire root 〉 the bark 〉 the leaf 〉 the branch. Tire average carbon contents in understory forest of the A. concinnatai, tire A. melanoxylon and the A. rnangiun were 42.29% , 42.78% and 41.26% , respectively, which was obviously lower than those in tree layer. The total carbon storage of the forest ecosystem for the A. concinnatai, the A. melanoxylon and the A. mangiun were 110.06, 124.46, 88.86 t · hm-2, respectively; in which mineral soil layers have the largest distribution, were 68.20% , 77.11% , 74.69% , respectively; in which the tree layers have the second distribution, were 29.04% , 21.26% , 22.14% , respectively; in which the understory forests have the lowest distribution, only were 0.70%, 0.33%, 1.34%.

关 键 词：相思人工林 含碳率 碳贮量 分配 

分 类 号：S718.5[农业科学—林学]