关键词: 钟萼木, 人工造林, 海拔, 生长量

Abstract: Afforestation trial on 4-year-old Bretschneidera sinensis were conduted at different altitudes in Jianning county, Fujian province. And the net growth of tree height and diameter on root collar (DRC) were investigated after 4 to 8 years planting. The results showed that there were insignificant differences in afforestation survival rate among the B. sinensis seedlings planted at different altitudes. But the increment of tree height and DRC among those at different altitudes differed significantly. The increments of tree height at altitudes 350, 660, 750 m were 72, 164, 162 cm, respectively. Meanwhile, the growth mass of DRC at altitudes 350, 660, 750 m were 0.93, 1.53, 1.83 cm respectively. In a word, the net growth of tree height and DRC were increased with a rise in altitude for afforestation ranging from 350-750 m. Consequently altitude was one of the most important factors for B. sinensis seedlings afforestation.

Key words: Bretschneidera sinensis, artificial afforestation, altitude, growth mass