摘要
通过对不同坡向、坡位上的12年生杂交马褂木人工林平均生长量和生物量调查,在生长量调查的基础上采用树干解析法研究其生长进程,结果表明：不同坡向上,12a生杂交马褂木的树高、胸径、蓄积量均为南坡〉北坡,不同坡位上均为下坡位〉中坡位〉上坡位;林分的总生物量为南坡显著大于北坡;1~4a为杂交马褂木胸径、树高和材积的缓慢增长期,第4a之后,其胸径、树高和材积总生长量均迅速上升,在第12a时,两种坡向上杂交马褂木的胸径、树高和材积生长量仍在继续增加,但未达到整个生长过程的顶峰,在1~12a间,南坡的胸径和材积平均生长量均大于北坡,但在第8年之后,这种差异逐渐变小。
The average growth increment and biomass of 12-year-old Liriodendron chinense × L. tulipifera plantation at different slope direction and slope position were investigated. Based on this investigation, the growth progress was studied by the method of Stem Analysis. The results showed at different slope direction the tree height, DBH and volume of the12-year-old hybrid was South direction north direction, respectively; at different slope position, the tree height, DBH and volume of the 12-year-old hybrid was low slope positionmiddle slope position high slope position. The total biomass at south slope was obviously higher than that of north slope; the DBH, tree height and volume of the 1 to4-year-old hybrid grew slowly, and zoomed quickly after 4 years old; at the age of 12 years old, they were still growing at the two slope direction, but did not reach the growing peak; From the 1th year to12 th year, the DBH and volume of the hybrid at the south direction was higher than that of north direction, but it was not obvious after the 8th year.
出处
《福建林业》
2016年第2期35-38,共4页
Fujian Forestry
关键词
坡位
坡向
杂交马褂木
生物量
生长量
slope position
slope direction
Liriodendron chinense × L
tulipifera
biomass
growth increment
