广西林业科学2018，Vol.47Issue(1)：41-46,6.
15年生香樟人工林生长规律研究
The Growth Rhythm of 15-year-old Cinnamomum camphora Plantation
摘要
Abstract
The growth rule for a 15-year-old Cinnamomum camphora plantation was investigated in Huang-fengqiao forest farm,Hunan.Stem analysis was adopted to examine the dynamic changes of diameter at breast height(DBH),tree height(H),and volume in each year. Results showed that the average DBH,mean tree height and average stem bifurcation height of C.camphora plantation were 18.8 cm,13.7 m,8.6 m,re-spectively.The current annual increment of tree height followed an pattern of"high-low-high".There were two peaks for current annual increment during the growing period,which were the fourth year and the twelfth year. The tree height of C.camphora grew rapidly at seedling stage,which showed a stable trend after the sixth year,and reached 15.1 m at the fifteenth year.The total increment of DBH was 26.7 cm.The DBH current an-nual increment fluctuated greatly during the fifteen growing periods,which reached the peak value of 1.95 m/a at the twelfth year.The average growth fluctuation was small,and the overall growth was steady,which main-tained from 1.75 to 2.03 m/a.The total volume increment of C.camphora was 0.359 25 m3.The current annual growth curve and the average growth curve of volume did not intersect in the fifteen growing periods,which in-dicated that C.camphora plantations have not reached the quantitative maturity age,and the average incre-ment of volumn has not reached the maximum.The main felling age of C.camphora shoud be 15 years later.关键词
香樟/人工林/生长规律/树干分叉高度Key words
Cinnamomum camphora/plantation/growth regularity/height of stem bifurcation分类
农业科技引用本文复制引用
谭桂菲,武建云,吴际友,吴建文,钟连香,黎贵卿,曾怡嘉,王军锋..15年生香樟人工林生长规律研究[J].广西林业科学,2018,47(1):41-46,6.基金项目
广西林业科技项目(桂林科字[2016]第(33)号) （桂林科字[2016]第(33）
