摘要
对海岸沙地木麻黄防护林带生物量和生产力的研究结果表明:13年生木麻黄林带的生物量为100.01t.hm-2,生物量的大小序列为干材>根系>树枝>叶枝>干皮>枯枝。立木生物量总量的空间格局是随树高的增加而减少,不同器官生物量的空间分布却有所不同,干材和干皮生物量随树高的增加而减少,树枝生物量则主要集中在树冠中层或中下层,叶枝则主要分布在上层或中上层。沙地木麻黄林带具有较高的生产力,为7.693t.hm-2.a-1。海岸沙地木麻黄这种生物量和生产力水平足以说明它对海岸沙地的生态环境具有很强的适应能力。
Biomass and productivity of Casuarina equisetifolia shelter belt along the coastal sandy land were studied. The resuh indicates that the biomass of 13-year-old Casuarina equisetifolia shelter belt is 100.01 t ·hm^-2. The size sequence of biomass are ： bole, root, branch,leaf shoot, bark and dead branch. The spacial pattern of the gross stumpage biomass decreases with the increase of tree height. The special distributing of biomass is different for different apparatus. The biomass of trunk wood and trunk bark decreases with the increase of tree height, however,the biomass of branch mostly focus on the middle layers or middle and lowerlayers of the crown of a tree. The leaf and branch distribute mostly at the upper layer or pelagic. The productivity of Casuarina equisetifolia shelter belt along the coastal sandy land is greater,it is 7. 693 t ·hm^2·a^-1. Casuarina equisetifolia shelter belt has strong adaptability for the eco-enviromnent of coastal sandy land by the cause of the biomass and productivity level.
出处
《防护林科技》
2008年第5期6-8,共3页
Protection Forest Science and Technology
基金
国家"九五"科技攻关专题(96-007-04-06)
国家教育部留学回国人员科研启动基金(教外司留(1997)832)
关键词
木麻黄
防护林
生物量
生产力
沙地
广西
Casuarina equisetifolia
shelter belt
biomass
productivity
sandy land
Guangxi
