摘要
对20年生北美鹅掌楸人工林生产力及碳氮积累研究表明:北美鹅掌楸福建北部生长潜力较大,树高达15.61～24.54m,胸径为21.37～33.31 cm,单株材积为0.259～0.990 m3。北美鹅掌楸对立地条件敏感,Ⅰ类地树高、胸径、材积生长分别比Ⅲ类地增加63.62%、55.90%、281.91%;全树总生物量可达580.27 t.hm-2,各生长器官的生物量大小顺序为树干>树枝>树根>树皮>树叶,分别占到总生物量的58.80%、20.61%、11.94%、5.58%和3.07%;树干、树叶、树皮、树枝、树根碳含量分别为52.13%、50.61%、49.20%、46.85%、45.34%,氮含量分别为0.72%、0.91%、0.96%、0.88%、0.83%;全树碳总积累量可达290.26 t.hm-2,树干、树枝、树根、树皮、树叶分别为177.86、56.02、31.43、15.92、9.03 t.hm-2;全树氮总积累量可达4.56 t.hm-2,大小顺序依次为树干>树枝>树根>树皮>树叶。
20-year-old Liriodendron tulipifera plantation productivity and carbon and nitrogen accumulation research showed that: its potential was bigger in northern Fujian growth,tree height growth reached 15.61~24.54 m,the breast height growth was 21.37~33.31 cm diameter,individual volume growth reached 0.259~0.990 m3.it was sensitive to the site condition.tree height,diameter and volume at site Ⅰ were 63.62%,55.90% and 281.91% higher than them at site Ⅲ;The whole tree total biomass could reach 580.27 t·hm-2,the organ biomass growth was in the following order : trunk>branch>root>bark>leaf,them were accounted for 58.80%,20.61%,11.94%,5.58% and 3.07% of the total biomass;the trunk,branch,leaf,bark,and root carbon contents were 52.13%,50.61%,49.20%,46.85%,45.34%,nitrogen contents were 0.72%,0.91%,0.96%,0.88%,0.83%;The whole tree total carbon accumulation could reach 290.26 t·hm-2,the trunk,branch,root,bark,leaf were 177.86,56.02,31.43,15.92,9.03 t·hm-2;the whole tree total nitrogen accumulation could reach 4.56 t·hm-2,it had the following order: trunk>branch>root>bark>leaf.
出处
《福建林业科技》
北大核心
2013年第1期26-28,98,共4页
Journal of Fujian Forestry Science and Technology
基金
世行贷款国家造林项目"阔叶树"课题
福建省林业厅"鹅掌楸种源试验和商用优良种源选择"课题资助
关键词
北美鹅掌楸
生物量
生产力
碳氮积累
Liriodendron tulipifera
biomass
productivity
carbon and nitrogen accumulation
