[1]游文娟,张庆费*,夏檑.城市绿化植物叶片结构对光强的响应[J].西北林学院学报,2008,23(05):22.
　YOU Wen juan,ZHANG Qing fei*,XIA Lei.Responses of Leaf Structure of Urban Greening Plants to Different Light Conditions[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2008,23(05):22.
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城市绿化植物叶片结构对光强的响应()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第23卷
期数:
2008年05期
页码:
22
栏目:
森林生物、生理、生态、植物、气象等
出版日期:
2008-09-30

文章信息/Info

Title:
Responses of Leaf Structure of Urban Greening Plants to Different Light Conditions
作者:
游文娟1; 2; 张庆费2* ; 夏檑2
1. 华东师范大学 生命科学学院，上海 200062；2. 上海市园林科学研究所，上海 200232
Author(s):
YOU Wenjuan1; 2; ZHANG Qingfei2*; XIA Lei2
1.School of Life Science, East China Normal University, Shanghai 200062, China; 2.Shanghai Research Institute of Landscape Gardening, Shanghai 200232, China
关键词:
叶片形态结构; 解剖结构; 光强; 光适应; 遮荫; 耐荫性
Keywords:
leaf morphological structure;  leaf anatomica structure;  light intensity;  light adaptation;  shading;  plant shade tolerance
分类号:
S718.45
文献标志码:
A
摘要:
测定了14种城市绿化植物叶片结构对3种光强生境（0%（全光照）、45%和75%遮光）的响应，比较植物的叶片厚度、叶肉组织厚度（栅栏组织和海绵组织）、气孔密度、上下表皮厚度和叶脉系统（中脉和维管束）等变化特征。结果表明，随着遮光度增加，大多数研究植物叶片变薄，栅栏、海绵组织厚度变薄，但栅栏组织/海绵组织的比值减小，气孔密度减小，叶片表皮变薄但变幅不大，中脉厚度有变小趋势但维管束系统变化不明显。主要根据叶片厚度变化和叶肉组织中海绵组织发达程度，将14种植物的耐荫性分为3类，其中耐荫性较强的植物有5种：厚皮香、桃叶珊瑚、油麻藤、石楠和栀子；耐荫性一般的植物有5种：金边水蜡、紫叶小檗、金丝桃、金边黄杨和红王子锦带；耐荫性较弱的植物有4种：火棘、金焰绣线菊、金山绣线菊和红花檵木。而叶片气孔密度、上下表皮厚度和叶脉系统的变化可能与植物耐荫性缺乏直接联系。
Abstract:
Under the light shading conditions of 0%,45% and 75% of 14 urban greening plants were studied from five aspects: leaf thickness, mesophyll thickness(palisade tissue and the spongy tissue), the stomatal density, the thickness of upper and lower epidermis and the vein（the costae and the vascular bundle）. The results showed that with the increase of shade ratio, almost all these plant leaf structures exhibited same changes, the leaves turned thin,so did the palisade tissue and the spongy tissue, the palisade tissue/spongy tissue ratio decreased, the stomatal density declined, the thickness of upper and lower epidermis became thin alittle, the costae turn thin but the vascular bundle changed little. By the change of the leaf thickness and the mesophyll, all 14 garden plant species could be classified into three groups of shade tolerance. Five plants of strong shade tolerance: Spiraea bumalda cv. gold flame, Aucuba japonica var. variegata, Mucuna sempervirens, Photinia serrulata, Weigela florida cv. red prince. Five plants were intermediate in shade tolerance: Ligusrum ovalifolium f. aureum, Berberis thunbergii f. atropurpurea, Hypericum chinense, Euonynus japonicus var. aureomarginatus, Weigela florida cv. red prince. Four plants had low shade tolerance: Pyracantha fortuneana, S. bumalda cv. gold flame, S. bumalda cv. gold mound, Loropetalum chinense var. rubrum. Except the leaf thickness and the mesophyll, the other three aspects might lack direct relations with the plant shade tolerance.

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备注/Memo

备注/Memo:
收稿日期：20080415修回日期：20080429 基金项目： 国家科技支撑计划项目（2006BAD03A1702）；上海市建设技术发展基金会科研项目。 作者简介：游文娟,女,硕士研究生,主要从事植物生态学研究。 *通讯作者：张庆费,男,教授,博士,主要从事绿地生态和城市森林研究。
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