[1]汪梦婷,郭双仙,蔡年辉,等. 云南松苗木生物量构成因素的分析[J].西北林学院学报,2019,34(3):98-103.[doi:10.3969/j.issn.1001-7461.2019.03.15]
　WANG Meng-ting,GUO Shuang-xian,CAI Nian-hui,et al. On Constituent Factors Affecting Seedling Biomass of Pinus yunnanensis[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(3):98-103.[doi:10.3969/j.issn.1001-7461.2019.03.15]
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 云南松苗木生物量构成因素的分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第3期
页码:
98-103
栏目:
出版日期:
2019-05-31

文章信息/Info

Title:
 On Constituent Factors Affecting Seedling Biomass of Pinus yunnanensis
文章编号:
1001-7461(2019)03-0098-06
作者:
 汪梦婷1; 2; 3; 郭双仙1; 2; 蔡年辉1; 2; 3; 陈诗2; 王大玮1; 张焕1; 2; 3; 夏天帅1; 许玉兰1; 2; 3*
 （1.西南林业大学 云南省高校林木遗传改良与繁育重点实验室，云南 昆明 650224；2.西南林业大学 西南山地森林保育与利用省部共建教育部重点实验室，云南 昆明 650224；3.西南林业大学 国家林业局西南地区生物多样性保育重点实验室，云南 昆明 650224）
Author(s):
 WANG Meng-ting1; 2; 3; GUO Shuang-xian1; 2; CAI Nian-hui1; 2; 3; CHEN Shi2; WANG Da-wei1; ZHANG Huan1; 2; 3; XIA Tian-shuai1; XU Yu-lan1; 2; 3*
 (1.Key Laboratory for Forest Genetic and Tree Improvement & Propagation in Universities of Yunnan Province,Southwest Forestry University,Kunming 650224,Yunnan,China; 2.Key laboratory for Forest Resources Conservation and Use in the Southwest Mountains of China,Ministry of Education,Southwest Forestry University,Kunming 650224,Yunnan,China)
关键词:
 ; 云南松; 生物量; 构成因素; 通径分析
Keywords:
Pinus yunnanensis;  biomass;  constituent factor;  path analysis
分类号:
S791.257
DOI:
10.3969/j.issn.1001-7461.2019.03.15
文献标志码:
A
摘要:
 为分析云南松苗木生物量的构成因素，以2年生云南松苗木为材料，对其生长性状和生物量进行了测定，运用相关分析与通径分析探讨了二者间的关系，并建立了回归方程。结果表明，云南松苗木生物量地上部分明显高于地下部分，总生物量与地径、苗高、主根长、侧根数、侧根长、针叶长等性状均呈正相关。通径分析可知，地径（0.620）对云南松苗木总生物量的直接作用最大，而侧根数（0.009）的直接作用最小，侧根数是通过地径、苗高、主根长、侧根长和针叶长间接影响总生物量。决定系数分析显示，地径（63.75%）对云南松苗木生物量的综合作用最大，其次是苗高（36.52%），说明地径和苗高是影响云南松苗木总生物量的主要因素。建立的云南松苗木总生物量与生长性状间的线性回归方程，可用于云南松苗木生物量的估测。
Abstract:
 To analyze the constituent factors that affect Pinus yunnanensis seedling biomass,the growth characters and biomass of two-year-old seedlings of P.yunnanensis were used as materials to measure growth features and biomass.Multiple regression equations were established by correlation coefficients,path coefficients and determination coefficients.The results showed that the aboveground biomass was significantly higher than the underground biomass.Positive correlations were found among the total biomass and the growth characters including ground diameter,seedling height,main root length,lateral root number,lateral root length and needle length.The path analysis revealed that the ground diameter displayed the maximal positive direct effect (0.620) on seedling biomass,and the minimum was the lateral root number (0.009).The lateral root number affected seedling biomass indirectly via ground diameter,seedling height,main root length lateral root length and needle length.The determination coefficients showed that the maximal comprehensive effect on the seedling biomass was the ground diameter (63.75%),followed by the seedling height (36.52%),which indicated that the main factors influencing seedling biomass were ground diameter and seedling height.The multiple regression equations on seedling biomass and the growth characters of P.yunnanensis were established,which could be used to forecast the seedling biomass.

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备注/Memo

备注/Memo:
 收稿日期：2018-01-28修回日期：2018-04-13
基金项目：国家自然科学基金(31760204，31360189)；云南省高校林木遗传改良与繁育重点实验室开放基金项目(YNGBT201702)。
作者简介：汪梦婷，女，硕士在读，研究方向：林木遗传育种。E-mail:837175206@qq.com
*通信作者：许玉兰，女，博士，教授，研究方向：林木遗传育种。E-mail:xvyulan@163.com
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