灰木莲人工林碳贮量及其分配特征  

Carbon storage and distribution of Manglietia glauca plantation

作　　者：覃祚玉[1] 何斌[1] 韦录 卢万鹏[1] 廖倩苑[1] 刘红英[1] 刘莉[1] 刘莹[1] 

机构地区：[1]广西大学林学院,南宁530004 [2]崇左市凤凰山林场

出　　处：《林业科技开发》2013年第5期33-36,共4页China Forestry Science and Technology

基　　金：广西科学研究与技术开发计划课题(编号:桂科攻11194008);国家自然科学基金项目(编号:31160152)

摘　　要：对广西南宁市高峰林场46年生灰木莲人工林生态系统碳素贮量及其分配格局进行系统研究.结果表明,灰木莲各组分碳素含量变化范围为476.8～ 532.5 g/kg,各器官碳素含量为树干＞树根＞树枝＞树皮＞树叶,土壤层（0～80 cm）碳素含量为10.36 g/kg,不同土层碳素含量随土壤深度增加而降低.灰木莲人工林生态系统总碳贮量为236.70 t/hm2,其中乔木层碳贮量（118.03 t/hm2）最大,占生态系统总碳贮量的49.86％；灌木层碳贮量为2.00 t/hm2,占0.84％；草本层碳贮量为1.18 t/hm2,占0.50％；现存凋落物碳贮量为3.48 t/hm2,占1.47％；土壤层有机碳贮量为111.71 t/hm2,占47.19％.灰木莲人工林生态系统乔木层碳素年净固定量为3.72 t/.（hm2 ·a）,各组分碳素年净固定量大小依次为：树干＞树叶＞树根＞树枝＞树皮.Through a sampling site investigation,the carbon storage and distribution of 46-year-old Manglietia glauca plantations were studied at Gaofeng forest farm in Nanning of Guangxi Province,China.The results showed that the carbon content in different organs of M.glauca ranged from 476.8 to 532.5 g/kg,and it was in the order of stem 〉 root 〉 branch 〉bark 〉 leaf.Carbon content in the soil （0-80 cm） was 10.36 g/kg and declines with soil depth.The total carbon storage in M.glauca plantation ecosystems amounted to 236.70 t/hm2,of which over-storey of M.glauca stored 118.03 t/hm2 and accounted for 49.86%.The shrub layer stored 2.00 t/hm2 and accounted for 0.84%.The herb layer stored 1.18 t/hm2 and accounted for 0.50%,the litter layer stored 3.48 t/hm2 and accounted for 1.47%,as well as the soil stored 111.71 t/hm2 and accounted for 47.19%.The annual carbon storage in the tree layer ofM.glauca plantations was up to 3.72 t/（hm2 ·a）,and the annual carbon storage in different organs of M.glauca was as follow：stem 〉 leaf 〉 root 〉 branch 〉 bark.

关 键 词：灰木莲 人工林 碳素含量 碳贮量 碳分配 

分 类 号：S791.246[农业科学—林木遗传育种]