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作 者 ：郭文福

期 刊 ：林业科学研究 2009年 22卷 6期 页码：835-839

关键词：米老排；人工林；生长；立地条件；

Keywords:Mytilaria laosensis, plantation, growth, site condition,

摘 要 ：利用广西大青山林区79块林龄为20 - 25 a的人工林样地调查数据,分析米老排人工林生长与海拔、土壤种类、坡位、坡形、坡向和立地类型等的关系,结果表明:(1)在南亚热带地区,米老排造林地应选择海拔300 - 500 m的高丘和中低山地带;(2)花岗岩、流纹岩等岩浆岩类母岩母质发育的红壤是米老排人工林生长最合适的土壤种类;(3)米老排造林立地应选择山坡的中下部,凹形坡和平坡的坡地较好。按以上条件选择造林立地,米老排林分优势树高年均生长量可达1.1 - 1.3 m,胸径年生长量达1.3 - 1.5 cm,种植后20 a可达到培育大径材的目的。

Abstract:With the data of 79 sample plots collected from the plantation aged from 20—25 years in Daqingshan, south-west Guangxi province, China, an analysis on the relationship between growth and site conditions, including altitude, soil type, slope position, form and direction of slope, and site type, was conducted by analysis of variance (ANOVA). The result showed that the perfect site conditions for afforestation of Mytilaria laosensis would be the site: (1)with the altitude between 300—500 m in high hills or low mountains;(2)with the kraznozem which evolved from such magmatic rocks as granite and rhyolite;(3)at middle or lower part in a concave slope. If these could be met for site selection, the annual increment of height for dominant trees in stand would be 1.1—1.3 m and DBH would be 1.3—1.5 cm, and after 20 years of planting it would grow into a big-diameter timber forest.

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