| 松嫩草原不同盐碱化生境中羊草的克隆可塑性研究 |
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| 引用本文： | 李静,马小凡,郭平,包国章.松嫩草原不同盐碱化生境中羊草的克隆可塑性研究[J].沈阳师范大学学报(自然科学版),2007,25(4):506-509. |
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| 作者姓名： | 李静 马小凡 郭平 包国章 |
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| 作者单位： | 1. 沈阳师范大学,化学与生命科学学院,辽宁,沈阳,110034
2. 吉林大学,环境与资源学院,吉林,长春,130023 |
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| 摘 要： | 以松嫩草甸的羊草为对象,比较研究了生长在5种不同盐碱化生境群落中的羊草克隆形态特征.结合克隆植物对资源的利用对策,对盐碱化生境中的羊草形态可塑性进行了讨论.通过对羊草根茎节间长、间隔子长、分枝角度、根冠比、分株密度、株高和生物量等指标的测定和分析,从基株和分株种群两个层次,研究了羊草的克隆构型特征和分株种群特征的变化.结果发现:随着生境土壤盐碱化程度的加重,羊草的克隆构型趋向于"游击型",根冠比呈逐渐下降趋势,表现为"逃避行为".
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| 关 键 词： | 羊草 盐碱化 形态可塑性 克隆生长 |
| 文章编号： | 1673-5862（2007）04-0506-04 |
| 修稿时间： | 2007-06-04 |
Studies on Clonal Plasticity of Leymus chinensis from Habitats with Different Degree of Salt and Alkali in the Songnen Plain |
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| LI Jing,MA Xiao-fan,GUO Ping,BAO Guo-zhang.Studies on Clonal Plasticity of Leymus chinensis from Habitats with Different Degree of Salt and Alkali in the Songnen Plain[J].Journal of Shenyang Normal University: Nat Sci Ed,2007,25(4):506-509. |
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| Authors: | LI Jing MA Xiao-fan GUO Ping BAO Guo-zhang |
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| Institution: | 1. College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China; 2. College of Environment and Resources, Jilin University, Changchun 130023, China |
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| Abstract: | The clonal morphological plasticity of Leymus chinensis from five habitats with different degree of Salt and Alkali was studied.We measured internode length,spacer length,branching angle and root/shoot ratio,and found that as the degree of salinity and alkalinity increased,clonal architecture of Leymus chinensis tended to be more "guerrilla",while the root/shoot ratio presented downtrend.These results are discussed in the context of resource acquisition strategy by clonal plants. |
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| Keywords: | Leymus chinensis salinity and alkalinity morphological plasticity clonal growth |
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