摘要
利用江西大岗山 17～ 2 5年生杉木人工林的临时样地 (4 4块 )和固定样地 (52块 )材料 ,研究了立地、年龄和保留密度对杉木成材的影响。研究结果表明 :影响杉木中大径材成材的主要限制因子是立地 ,其次是保留密度和培育年限。立地指数级大于或等于 16 ,保留密度为 10 50～ 1350株·hm-2 ,年龄为 2 0～ 2 2 a时 ,适于培育中径材。大径材培育的经营密度则应更低 。
The data from 44 temporary plots and 52 fixed plots of 17～25 years old Cunninghamia lanceolata plantations in Jiangxi Province were used to study the influence of site,age and reserved density on the wood property of C.lanceolata. The results showed that the dominant factor influencing the formation of middle and large dimension wood is site,followed by reserved density and cultivation duration.It is suitable to cultivate middle dimension wood when the site index is no less than 16,the reserved density is 1 050～1 350 trees per hectare,and the age of tree is between 20～22 years old. For cultivating large dimension wood,the management density should be lower and the cultivation duration should be longer.
出处
《林业科学研究》
CSCD
北大核心
2000年第2期177-181,共5页
Forest Research
基金
"九五"国家攻关"杉木建筑材树种遗传改良与大中径材培育技术研究"专题
关键词
杉木
成材机理
立地指数
保留密度
材种
年龄
Cunninghamia lanceolata
middle and large dimension timber
growth mechanism
