[1]李生,曹永慧,陈存及.乳源木莲冠层特性与生长的相关及通径分析[J].南京林业大学学报(自然科学版),2005,29(06):057-60.[doi:10.3969/j.jssn.1000-2006.2005.06.014]
 LI Sheng,CAO Yong-hui,CHEN Cun-ji.The Path and Correlation Analysis Between Crown Characteristics and Stemwood Growth of Manglietia yuyuanensis Law.[J].Journal of Nanjing Forestry University(Natural Science Edition),2005,29(06):057-60.[doi:10.3969/j.jssn.1000-2006.2005.06.014]
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乳源木莲冠层特性与生长的相关及通径分析
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
29
期数:
2005年06期
页码:
057-60
栏目:
研究论文
出版日期:
2005-10-20

文章信息/Info

Title:
The Path and Correlation Analysis Between Crown Characteristics and Stemwood Growth of Manglietia yuyuanensis Law.
文章编号:
1000-2006(2005)06-0057-04
作者:
李生1曹永慧1陈存及2
1. 中国林业科学研究院亚热带林业研究所, 浙江 富阳 311400; 2. 福建农林大学林学院, 福建 福州 353000
Author(s):
LI Sheng1 CAO Yong-hui1 CHEN Cun-ji2
1. Research Institute of Subtropical Forestry CAF, Fuyang 311400, China; 2. College of Forest Fujian Agriculture and Forestry University, Fuzhou 353000, China
关键词:
乳源木莲 冠层特性 通径分析
Keywords:
Manglietia yuyuanensis Law. Crown characteristics Path analysis
分类号:
S753
DOI:
10.3969/j.jssn.1000-2006.2005.06.014
文献标志码:
A
摘要:
<正>研究了两个杨树无性系(I-69杨和I-72杨)各生物组分中大量元素年变化规律。结果表明:两个无性系的大量元素在其各生物组分中的含量相近,变化规律相似;两个杨树无性系营养元素氮、磷、钾、钙、镁均以叶中元素含量的年变化幅度最为明显,分别为82.6%、82.2%、84.7%、85.7%和88.7%;当年生小枝与2年生小枝积累大量元素的规律相似;各生物组分生长最旺盛的时期存在养分的“稀释效应”;氮、磷、钾的平均含量以叶中最大,钙、镁以当年生木质部最大。研究结果可为杨树人工林的营养管理和地力维护提供依据。
Abstract:
The stands of 17-year-old Manglietia yuyuanensis Law. mixed with Chinese fir were researched by analysing the relationship between crown characteristics and growth of M. yuyuanensis Law. The results showed that the stemwood growth index(VI) was positively related to the total leaf area(TLA), surface area of crown(TCA) and crown shape ratio (CSR), but negatively related to the leaf area index(LAI) and crown layer density(CLD). The path analysis showed that TCA had the biggest direct effect(Pyxi=1. 201 3)on the stemwood growth. In the five main growth parameters of crown layer, based on the importance of relationships with stemwood growth, the order of them was TCA, LAI, TLA, CSR and CLD. The effects of spatial configuration of crown and stemwood growth were analysed. It showed that in the vertical distribution of crown foliage, the down and middle layer was decisive to the stemwood growth, the role of upper layers was secondary. In the horizontal distribution, inner and outer parts had the great contribution to the growth, but the middle parts had less. The study of reasonable crown structure of M. yuyuanensis could be used to. direct the big timber cultivation of M. yuyuanensis.

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[1]欧建德,吴志庄*,康永武.杉莲混交林中乳源木莲生长形质、空间利用能力的混交比例效应[J].南京林业大学学报(自然科学版),2020,44(01):089.[doi:10.3969/j.issn.1000-2006.201810003]
 OU Jiande,WU Zhizhuang*,KANG Yongwu,et al.Effects of mixing proportion on the growth, stem form quality and spatial utilizataion ability of Manglietia yuyuanensis in mixed forests with Cunninghamia lanceolata and M. yuyuanensis[J].Journal of Nanjing Forestry University(Natural Science Edition),2020,44(06):089.[doi:10.3969/j.issn.1000-2006.201810003]

更新日期/Last Update: 2013-05-20