摘要
通过对福建南平樟湖国有林场35年生楠木人工林生物量与生产力以及其生长过程的研究结果表明:35年生楠木人工林平均树高、胸径和林分蓄积量分别为17.3m、24.0cm和229.220m3·hm-2,林分生物量和乔木层则分别达193.503t·hm-2和182.948t·hm-2,乔木层生物量占整个林分总生物量的94.55%.林分年均净生长量为5.227t·hm-2;乔木层生物量所占比例大小顺序为:干(70.43%)>皮(7.74%)>枝(3.31%)>叶(1.00%);树干生物量垂直分布呈金字塔形,活枝和鲜叶主要分布在9m以上.与杉木生长过程相比,楠木在早期生长较慢,生长高峰期较迟且高峰值较小,整个生长曲线较为平缓、均匀.
The biomass and growth process in Phoebe bournei Yang plantation were analyzed base on the investigated data in national forest station Zhanghu,Fujian,in October 2002The results showed:the mean tree height and mean DBH and volume in 35yearold Phoebe bournei Yang plantation were 173 m,240 cm and 229220 m3·hm-2,respectively;the biomass of stand and tree layer were 193503 t·hm-2 and 182948 t·hm-2 respectively,the biomass allocation in tree stratum decreased in the order:stem(7043%)>bark(774%)branch(331%)>leaf(100%);the vertical distribution of stock biomass look like a pyramid and the living branches and leaves were mainly distributed along the stem more than 9 meters above the groundThe growth process analysis showed Phoebe bournei Yang grew slowly in its young stage,the peak of its growth is later and its growth curve appears relatively smooth,Comparing with the growth process of Cunninghamia lanceolata
出处
《福建林学院学报》
CSCD
北大核心
2003年第2期128-131,共4页
Journal of Fujian College of Forestry
基金
福建省自然科学基金资助项目(C9810027).
关键词
楠木人工林
生物量
生产力
生长过程
Phoebe bournei Yang
biomass
productivity
growth process
