科尔沁沙地22种菊科草本植物叶片形态特征研究  

Leaf morphological characters of 22 compositae herbaceous species in Horqin sandy land.

作　　者：李晓兰[1] 李雪华[1] 蒋德明[1] 刘志民[1] 王红梅[1] 姬兰柱[1] 

机构地区：[1]中国科学院沈阳应用生态研究所

出　　处：《生态学杂志》2005年第12期1397-1401,共5页Chinese Journal of Ecology

基　　金：中国科学院沈阳应用生态研究所知识创新工程领域前沿资助项目(C12SJSLY-QY0406-506);科尔沁沙地典型地区荒漠化动态监测研究(00-08-05)。

摘　　要：以内蒙古科尔沁沙地22种菊科草本植物为实验材料,研究这些植物的比叶面积、叶片厚度、叶片干物质含量、叶片体积、叶重比和叶片组织密度等特性之间的关系。结果表明,叶片体积和叶片厚度之间存在较强的正相关,其相关系数r=0.782。而叶片厚度与叶片组织密度、比叶面积与叶片组织密度、叶片体积与叶片组织密度之间则存在一定的负相关性,它们的相关系数分别为-0.767、-0.559和-0.505,其余各特性之间均不存在相关性。根据赋值后数据或者二元数据,运用聚类分析方法得出3个组群,并运用单因素方差分析方法检验各特性在各组间的显著性,叶片厚度、叶片体积、叶重比和叶片组织密度特性在组间存在极显著差异。The study on the leaf traits of 22 compositae herbaceous species in Horqin sandy land indicated that there was a positive correlation between leaf volume and leaf thickness （ r = 0. 782 ）, while the correlations between leaf thickness and leaf tissue density, specific leaf area and leaf tissue density, and leaf volume and leaf tissue density were negative, with r values being - 0. 767, - 0. 559 and - 0. 505, respectively. No significant correlations were observed among other leaf traits. Based on the categorical or binary data, these 22 species were divided into 3 groups by cluster analysis. One-way ANOVA analysis suggested that there was a markedly significant difference among the groups in their leaf thickness, volume, weight ratio, and tissue density.

关 键 词：菊科 草本植物叶片 形态特征 生活型 

分 类 号：Q944.56[生物学—植物学]