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| 引用本文: | 贺 丽, 周 旭, 刘 成, 齐代华, 蒋宣斌, 陈丽洁.南川木波罗幼苗构件生物量和叶片特征随年龄增长的变化[J].广西植物,2014,(4):489-493.[点击复制] |
| HE Li, ZHOU Xu, LIU Cheng, QI Dai-Hua, JIANG Xuan-Bin, CHEN Li-Jie.Leaf traits and biomass dynamics of modular population in different age classes Artocarpus nanchuanensis seedlings[J].Guihaia,2014,(4):489-493.[点击复制] |
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| 南川木波罗幼苗构件生物量和叶片特征随年龄增长的变化 |
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贺 丽1, 周 旭1, 刘 成1, 齐代华1*, 蒋宣斌2, 陈丽洁2
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1. 三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 西南大学
生命科学学院, 重庆 400715;2. 重庆市林业科学研究院, 重庆 400036
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| 摘要: |
| 为深入了解南川木波罗构件种群生物量、比叶面积及叶干物质含量随苗龄叶龄的变化规律,以南川木波罗幼苗(1～5年生)为研究对象,分析其根、 茎、叶等构件种群的生物量、SLA、LDMC差异及动态变化。结果表明:(1)单株生物量随着苗龄增加而增加,且差异达显著性水平;(2)各构件生物量增加的幅度不尽相同,其中枝条生物量增长幅度最大,5年生幼苗与2年生幼苗相比达477.23倍,其余构件生物量为主干>叶>根;(3)枝条和主干的生物量比率总体上呈上升趋势,所占根比率变动较小而叶逐渐下降。表明植物体对各构件生物量投资的不均衡性,主要偏向于枝和主干;(4)SLA随着苗龄的增加呈先上升后降低的趋势,且当年生叶大于1年生叶; 幼苗叶片干物质含量(LDMC)随苗龄增加而增加,且1年生叶均高于当年生叶。 |
| 关键词: 南川木波罗 构件种群 生物量 比叶面积 干物质含量 |
| DOI：10.3969/j.issn.1000-3142.2014.04.011 |
| 分类号:Q944.3 |
| 基金项目: |
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| Leaf traits and biomass dynamics of modular population in different age classes Artocarpus nanchuanensis seedlings |
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HE Li1, ZHOU Xu1, LIU Cheng1, QI Dai-Hua1*, JIANG Xuan-Bin2, CHEN Li-Jie2
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1. Key Laboratory of Eco-environment in Three Gorges Reservoir Region of Minisitry of Education, Chongqing Key Laboratory
of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Sciences, Southwest University,
Chongqing 400715, China;2. The Forestry Academy of Chongqing, Chongqing 400036, China
1. Key Laboratory of Eco-environment in Three Gorges Reservoir Region of Minisitry of Education, Chongqing Key Laboratory
of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Sciences, Southwest University,
Chongqing 400715, China; 2. The Forestry Academy of Chongqing, Chongqing 400036, China
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| Abstract: |
| SLA,LDMC and modules dynamics of Artocarpus nanchuanensis in Chongqing were studied systematically. The results showed that with the increase of A. nanchuanensis seedling ages,the biomass of the single A. nanchuanensis increased significantly,in which the difference of branch biomass was the biggest,the disparity even to 477.23 times between 2 and 5 age seedlings. The reserved modules biomass generally allocated in the order: branch biomass>leaf biomass>root biomass. The average biomass distribution rate of stem and branch increased generally,leaf ratio decreased,root ratio changed small. It showed that the chance to receive biomass varied among different modules. Branches had priority over stems in this aspect. With the increase of A. nanchuanensis seedling ages,the trend of SLA change was increased firstly,then decreased,and SLA of one-year-old leave was higher than those of two-year-old. At the same time,LDMC increased generally,but LDMC of current year leave was higher than those of one year. |
| Key words: Artocarpus nanchuanensis modular population biomass specific leaf area dynamics dry matter content |
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