粤东89种常见植物叶功能性状变异特征

被引:94
作者
陈文 [1 ]
王桔红 [2 ]
马瑞君 [2 ]
齐威 [3 ]
刘坤 [3 ]
张丽娜 [4 ]
陈学林 [4 ]
机构
[1] 韩山师范学院地理与旅游管理学院
[2] 韩山师范学院生命科学与食品科技学院
[3] 兰州大学生命科学学院
[4] 西北师范大学生命科学学院
关键词
叶性状; 变异; 科类群; 生活史属性; 适应性;
D O I
10.13292/j.1000-4890.201608.033
中图分类号
Q948 [植物生态学和植物地理学];
学科分类号
071301 [植物生态学];
摘要
叶功能性状体现了植物为获得最大化碳收获所采取的生存适应策略。本文研究了粤东89种常见植物叶功能性状包括叶面积(LA)、比叶面积(SLA)、叶干物质含量(LDMC)、叶氮含量(LNC)的变异特征及其与科类群、生活史属性和生境的关系。89种植物的LA、SLA、LDMC、LNC平均值分别为20.59 cm2、300.149 cm2·g-1、0.2213 g·g-1、2.55%;变异幅度依次是:LA(145.06%)>SLA(97.21%)>LDMC(36.40%)>LNC(27%)。LMDC与SLA呈极显著负相关关系(P<0.001)。不同科类群间SLA、LDMC差异显著(P<0.05),禾本科植物LDMC最大(0.359 g·g-1)、SLA最小(163.749 cm2·g-1),伞形科植物LDMC最小(0.136 g·g-1)、SLA最大(1091.42 cm2·g-1);藤本和灌木LA显著大于草本植物(P<0.01);科类群能解释LA、SLA、LDMC和LNC变异的26.3%、30.2%、40.9%和13.8%,其次是植物高度和生活型;科类群、植物高度和生活型三者交互作用能解释LA、SLA、LDMC、LNC变异的82.5%、80.9%、79.4%和56.7%;植物分布区、原产地及生境对叶性状均无显著影响(P>0.05)。粤东89种植物叶性状的种间变异主要受物种系统发育史和生活史特征的影响。
引用
收藏
页码:2101 / 2109
页数:9
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