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| 孑遗树种钟萼木幼树生长特性探讨 | |
| 引用本文： | 郭祥泉,周立华,熊自华,孙晓冬,郭祥堆,吴载璋,林建丽,郑经池,彭小勇.孑遗树种钟萼木幼树生长特性探讨[J].亚热带植物科学,2012(2):32-36. |
| 作者姓名： | 郭祥泉 周立华 熊自华 孙晓冬 郭祥堆 吴载璋 林建丽 郑经池 彭小勇 |
| 作者单位： | 1. 福建省三明市林业局,福建三明365000 2. 福建省建宁县林业局,福建建宁354500 3. 福建省永安市第六中学,福建永安366000 4. 福建省林业规划设计院,福建福州350002 5. 福建省永安市林业局,福建永安366000 |
| 基金项目： | 财政部、国家林业局投资项目资助 |
| 摘 要： | 研究了5年生钟萼木幼树株高、地径连年生长、侧枝分生特性。结果表明,调查群体5年生株高、地径平均值、最大值与最小值分别为2.0 m、3.4 m、0.5 m和3.2 cm、9.5 cm、0.5 cm;群体幼树株高、地径生长分布遵循正态分布;幼树群体的株高、地径生长在早期表现显著的遗传分化。1～5年生幼树的株高、地径年生长量表现为:株高在前3年表现较低生长量,第4、5年明显加快;地径在第1年生长量占比较大。幼树株高小于2.0 m的个体未发现分生侧枝,冠幅小且高生长较缓慢。 |
| 关 键 词： | 钟萼木 幼树 生长特性 正态分布 |
Study on the Growth Characteristic of Young Trees of Bretschneidera sinensis |
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| Institution: | GUO Xiang-quan1,ZHOU Li-hua2,XION Zi-hua2,SUN Xiao-dong1,GUO Xiang-dui3,WU Zai-zhang1,LIN Jian-li4,ZHENG Jing-chi5,PEN Xiao-yong1(1.The Forest Bureau of Sanming City of Fujiang Province,Sanming 365000,Fujian China;2.The Forest Bureau of Jianning County of Fujian province,Jianning 354500,Fujian China;3.The Sixth Middle School of Yong’an City of Fujian Province,Yong’an 366000,Fujian China;4.Forestry Planning and Design Institute of Fujian Province,Fuzhou 350002,Fujian China;5.Yong’an City Forestry Bureau ofFuJian Province,Yong’an,FujJan 366000 China) |
| Abstract: | The growth characteristics of height,root collar diameter and lateral branch of 5-year-old Bretschneidera sinensis trees were investigated.The results indicated that the averages,max,minimum of height and root collar diameter were respectively 2.0 m,3.4 m,0.5 m and 3.2 cm,9.5 cm,0.5 cm.The growth distributions of height and root collar diameter kept to the normal distribution.The growth of height and root collar diameter were evenly differentiated in treelet group.The current growth of height and root collar diameter of 1 to 5-year-old trees showed that the growth of height was lower in 3-year ago and higher at the 4 and 5-year.The growth of root collar diameter was bigger in the first year.The young trees which height were less than 2.0 m were not found lateral branch growth and their crown diameter was narrow and height growth was slowly. |
| Keywords: | Bretschneidera sinensis treelet growth characteristic normal distribution |
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