摘要
2016年4月,在浙江省建德市新安江林场的35年生北美红杉Sequoia sempervirens人工林中设置20 m×30 m标准地进行每木调查,选取并测定解析木数据,对其胸径、树高及材积的生长规律进行研究。结果表明,随着树龄的增大,北美红杉树高和胸径生长表现为"直线形",而材积生长则表现为"S"型;35年生北美红杉平均树高、胸径、材积总生长量分别为23.00 m,30.6 cm,0.343 0 m^3,年平均生长量分别为0.70 m,0.93 cm,0.010 4 m^3;连年生长量和平均生长量曲线并没有交叉,该树种还处于速生阶段未达到数量成熟。将北美红杉与毗邻的同龄杉木Cunninghamia lanceolata纯林的平均胸径和平均树高生长量进行比较,结果表明其年平均胸径及树高生长量均比杉木多。
Sample plots of20m×30m were established on April2016in35-year Sequia sempervirens plantation in Xin'anjiang Forest Farm,Zhejiang province.Complete enumeration was carried out in the plots,and3sample trees per plot were selected as analytic wood for determination of tree height,DBH and volume.The results showed that the curve of tree height and DBH growth was rectilinear figure,and that of volume increment was"S".The total increment of tree height,DBH and volume of35-year S.sempervirens was23.00m,30.6cm and0.3430m3.Their average annual growth was0.70m,0.93cm and0.0104m3.There was no cross between the current annual growth and the mean growth curve,indicating that the trees were still in the fast growing stage.Comparisons of mean DBH and height of the same age of S.sempervirens was made with that of Cunninghamia lanceolata,it demonstrated that of the former was better than that of the latter.
作者
关维元
吴军
钟志真
董海日
张少伟
GUAN Wei-yuan;WU Jun;ZHONG Zhi-zhen;DONG Hai-ri;ZHANG Shao-wei(Jiande Forestry Extension Center of Zhejiang, Jiande 311600, China;Xin’anjiang Forest Farm of Zhejiang, Jiande 311605, China)
出处
《浙江林业科技》
北大核心
2017年第3期54-58,共5页
Journal of Zhejiang Forestry Science and Technology
基金
杭州市农业科研攻关项目"北美红杉扦插繁育关键技术研究与示范"(20150932H39)
关键词
北美红杉
胸径
树高
材积
生长
Sequoia sempervirens
DBH
height
volume
growth
