科尔沁沙地东南部地区主要植物叶片性状及其相互关系

生态学杂志

科尔沁沙地东南部地区主要植物叶片性状及其相互关系

刘金环¹；曾德慧¹；Don Koo Lee²

¹中国科学院沈阳应用生态研究所大青沟沙地生态实验站, 沈阳 110016;²首尔国立大学森林科学系，首尔151-921，韩国

收稿日期:2006-03-03 修回日期:2006-03-30 出版日期:2006-08-10 发布日期:2006-08-10

Leaf traits and their interrelationships of main plant species in southeast Horqin sandy land

LIU Jinhuan¹;ZENG Dehui¹; Don Koo LEE²

¹Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; ²Department of Forest Sciences, Seoul National University, Seoul 151-921, Republic of Korea

Received:2006-03-03 Revised:2006-03-30 Online:2006-08-10 Published:2006-08-10

摘要/Abstract

摘要： 选取科尔沁沙地东南部地区23种主要植物，将其划分成草本、灌木和乔木3种生长型，并分别测定其叶片鲜重（FW）、干重（DW）、叶干物质含量（DMC）、面积（AR）、比叶面积（SLA）和厚度（TH）等6项叶片性状因子。结果表明，草本植物的叶片性状比灌木和乔木变异大；平均SLA草本≥灌木≥乔木，DMC和DW反之，而TH则没有明显的变化。方差分析发现，除DW和TH外，SLA和DMC在不同生长型中的变化显著，并且SLA与DMC呈显著负相关，说明SLA和DMC是在植物资源利用分类轴上划分植物种类的最佳变量。对于厚度，还需进一步进行研究。

关键词: Pine wood nematode disease, Pathogenic bacteria, Complex infection

Abstract: In this paper, 23 main plant species of herb, shrub and tree were sampled from southeast Horqin sandy land, and their leaf traits including fresh weight (FW), dry weight (DW), dry matter content (DMC), area (AR), specific leaf area (SLA) and thickness (TH) were measured. The results showed that the leaf traits of herb were more variable than those of shrub and tree. The average SLA was in the order of herb ≥ shrub≥ tree, DMC and DW was in reverse, while no apparent change was found in TH. A significant variation in leaf SLA and DMC was observed among herb, shrub and tree, and there was a significant correlation between these two indices, suggesting that SLA and DMC could be used to predict the plant species position along a resource use gradient. In case of leaf thickness, some variability could not be explained in this study, and thus, further studies should be focused on this leaf trait.

Key words: Pine wood nematode disease, Pathogenic bacteria, Complex infection, Propagation

刘金环；曾德慧；Don Koo Lee . 科尔沁沙地东南部地区主要植物叶片性状及其相互关系[J]. 生态学杂志.

LIU Jinhuan¹;ZENG Dehui¹; Don Koo LEE². Leaf traits and their interrelationships of main plant species in southeast Horqin sandy land[J]. cje.