摘要
以湖南省生长较好的桢楠为研究对象,通过木芯样的采集和分析,研究桢楠径向生长过程。结果表明：44年生桢楠的胸径平均生长量在树龄1～12年增幅较大,随后仍保持着较快的生长速度;连年生长量在生长初期增长迅速,生长峰值出现在第10年;生长率总体呈下降趋势,生长初期下降幅度比较大,从第12年开始下降幅度较小,最小可达0.53%。
Chose some Phoebe zhennan trees with good growth situation in Hunan province as research objects,through collecting the wood core samples and analyzing them,the radial growth rules of Phebe zhennan was studied. The results showed that,for 44 years old Phebe zhennan,the average increment of DBH increased fast at 1 ～ 12 years old,and kept a fast growth rate after that. The current annual increment of DBH increased rapidly in early growing stage,the maximum growth rate appeared at about 10 years old. The growth rate experienced a decreasing trend overall. The growth rate declined greatly in early growing stage and after 12 years old,the extent of the decline became slightly,with the minimum of 0. 53%.
出处
《湖南林业科技》
2014年第6期66-69,共4页
Hunan Forestry Science & Technology
关键词
桢楠
径向生长
生长规律
Phoebe zhennan
radial growth
growth regularity
