| 黑河上游祁连山区植物群落随海拔生境的变化特征 |
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| 引用本文： | 丁松爽,苏培玺.黑河上游祁连山区植物群落随海拔生境的变化特征[J].冰川冻土,2010,32(4). |
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| 作者姓名： | 丁松爽 苏培玺 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,临泽内陆河流域研究站,甘肃,兰州,730000;中国科学院,寒区旱区环境与工程研究所,临泽内陆河流域研究站,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金，中国科学院西部行动计划项目 |
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| 摘 要： | 基于79个样地的野外调查数据,采用双向指示种分析(TWINSPAN)等方法,研究了黑河上游祁连山浅山区、阴坡、阳坡3种典型类型植物群落随海拔梯度的变化特征.结果表明:浅山区植被属于山地荒漠类型;阴坡植被沿海拔升高依次分异为山地荒漠、山地森林和高山灌丛,海拔2 500m和3 300m是它们的海拔分界线;阳坡植被在海拔3 200m截然分异为干旱类型和湿润类型.乔木物种多样性随海拔变化难于形成一定的格局;灌木物种丰富度随海拔升高呈现多峰分布格局,总体上高海拔低、低海拔高;草本植物物种多样性随海拔升高呈单峰变化.以上生态型的各优势种分别占据不同的海拔范围,祁连山主要乔木青海云杉分布在海拔2 500～3 500m的阴坡,其郁闭度随海拔升高而降低,在海拔3 300m以上海拔区域为零星分布.
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| 关 键 词： | 祁连山区 植物群落 海拔梯度 物种多样性 优势种 |
Altitudinal Variation Characteristics of the Plant Community on the Upper Reaches of Heihe River in the Qilian Mountains |
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| DING Song-shuang,SU Pei-xi.Altitudinal Variation Characteristics of the Plant Community on the Upper Reaches of Heihe River in the Qilian Mountains[J].Journal of Glaciology and Geocryology,2010,32(4). |
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| Authors: | DING Song-shuang SU Pei-xi |
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| Institution: | DING Song-shuang,SU Pei-xi(Linze Inland River Basin Research Station,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China) |
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| Abstract: | Based on the field survey data from seventy-nine plots,including shallow mountainous area,shady slopes and sunny slopes,using two-way indicator species analysis and other methods,the altitudinal variation characteristics of plant community in the upper reaches of Heihe River in the Qilian Mountains are studied.The study results show that the vegetation in the shallow mountainous area is of mountain desert type.While the vegetation on the shady slopes can be recognized as mountain desert,mountain forest and ... |
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| Keywords: | Qilian Mountains plant community altitudinal gradient species diversity dominant species |
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