| 东祁连山杜鹃属植物形态特征及其生态适应性 |
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| 引用本文： | 张德罡,曹文侠,蒲小鹏,胡自治. 东祁连山杜鹃属植物形态特征及其生态适应性[J]. 草原与草坪, 2003, 0(1): 27-30,37 |
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| 作者姓名： | 张德罡 曹文侠 蒲小鹏 胡自治 |
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| 作者单位： | 甘肃农业大学草业学院,甘肃,兰州,730070 |
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| 基金项目： | 甘肃省教育厅资助项目"东祁连山高寒灌丛生态系统特征及其放牧管理策略"研究内容(9686473)。 |
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| 摘 要： | 对东祁连山杜鹃灌丛草地杜鹃属植物的形态特征及其生态适应性研究表明:百里香杜鹃和头花杜鹃个体相对低矮,叶片近革质、密被鳞片、有芳香但不强烈;烈香杜鹃个体较前者略高,叶片软革质、上无鳞片但背面有稀疏鳞片、有强烈芳香;陇蜀杜鹃个体最高,叶片坚革质、无鳞片、无芳香。花的数目陇蜀杜鹃和烈香杜鹃较多,为12～17朵;头花杜鹃3～8朵;而百里香杜鹃则为单一、偶成双。其叶片显示出不同的生态适应特点,即百里香杜鹃为小叶密鳞半落叶、头花杜鹃为小叶密鳞强反卷、烈香杜鹃为中叶疏鳞角质反卷、陇蜀杜鹃为大叶厚角质反卷。
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| 关 键 词： | 东祁连山 杜鹃 灌丛 植物形态 生态适应性 |
| 文章编号： | 1009-5500(2003)01-0027-05 |
Botanical Morpha and Ecological Adaptation of Rhododendron in Eastern Qilian Mountains |
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| Abstract: | The botanical morphaand ecological adaptation of Rhododendronin Eastern Qilian Mountains were studied. The results indicate that R.capitatumand R. thymifoliumshow lower height with leathery leaves coated by dense spuama and lihgt aroma; R.anthopogonoidesshows higher height with soft leathery leaves coated by sparse squama and strong aroma; R.przewalskiishows highest height with hard leathery leaves without squama and aroma. The leaf of four Rhododendronshrubs shows reverse twist shape for adapting alpine climate. |
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| Keywords: | Eastern Qilian Mountains Rhododendron shrubland botanical morpha ecological adaptation |
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