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杨朗生,刘兴良,刘世荣,潘红丽,冯秋红,李迈和.卧龙巴郎山川滇高山栎群落植物生活型海拔梯度特征.生态学报,2017,37(21):7170~7180 本文二维码信息
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卧龙巴郎山川滇高山栎群落植物生活型海拔梯度特征
Life-form characteristic of plants in Quercus aquifolioides community along an elevational gradient on Balang Mountain, Wolong Nature Reserve
投稿时间:2016-08-25  
DOI: 10.5846/stxb201608251732
关键词川滇高山栎  高位芽植物  地上芽植物  地面芽植物  地下芽植物  一年生植物  卧龙自然保护区
Key WordsQuercus aquifolioides  Phanerophytes  Chamaephytes  Hemicryptophytes  Geocryptophytes  Therophytes  Wolong Nature Reserve
基金项目国家"十二五"科技支撑计划课题(2012BAD22B0104);森林和湿地生态恢复与保育四川省点实验室开放课题
作者单位E-mail
杨朗生 四川农业大学风景园林学院, 温江 611130  
刘兴良 四川省林业科学研究院, 四川卧龙森林生态系统定位站, 成都 610081 liuxingliang@126.com 
刘世荣 中国林业科学研究院森林生态环境与保护研究所, 国家林业局森林生态环境重点实验室, 北京 100091  
潘红丽 四川省林业科学研究院, 四川卧龙森林生态系统定位站, 成都 610081  
冯秋红 四川省林业科学研究院, 四川卧龙森林生态系统定位站, 成都 610081  
李迈和 瑞士联邦森林、雪和景观研究院, CH-8903 Birmensdorf, 瑞士  
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摘要:
川滇高山栎林隶属于亚高山硬叶栎林类型,是一种广泛分布在横断山地区的特殊植被类型,研究同一群落生活型谱的海拔梯度特征,可以阐明控制群落的重要气候特征以及群落对其气候生境的反映,揭示川滇高山栎种群对空间的利用、群落内部种群间可能产生的竞争及其发展趋势。用环境梯度法,研究卧龙自然保护区巴朗山川滇高山栎群落植物生活型特性随海拔梯度(15个海拔梯度,海拔2200-3600 m)的变化。卧龙巴朗山川滇高山栎群落植物生活型以高位芽植物为主,占36.01%;地面芽和地下芽植物相当,分别为25.92%和29.36%,地上芽植物最少,占0.92%。高位芽生活型物种在各个海拔梯度都占重要地位,占巴朗山全部生活型物种的21.74%-50.00%,随海拔的升高逐渐下降;地面芽植物(H)具有随海拔升高先升高后降低的趋势;地下芽植物(G)生活型随海拔的升高而升高;一年生植物(Th)在整个海拔梯度内占10.00%以下,随海拔的升高波动不大,即在5.67%-8.94%之间。高位芽生活型植物主要以常绿高位芽植物为主,随海拔升高而下降,常绿高位芽植物丰富度呈现随海拔升高逐渐降低的趋势,而且其物种丰富度小于落叶高位芽植物丰富度;在卧龙巴郎山阳坡海拔3300 m以上范围内,大、中高位芽植物仅占3.09%-4.26%,说明森林植被特征在逐渐弱化。比较分析了不同类型植物群落植物生活型特征,阐明了川滇高山栎林是区别于其他常绿阔叶林的特殊类型。
Abstract:
Evergreen oak (Quercus aquifolioides Rehder & E.H. Wilson) forest is a type of subalpine sclerophyllous forest that is widely distributed in the subalpine zone of the Hengduan Mountains in southwestern China. In order to investigate the response of the forest's plant life-form characteristics to climate environment, the adaptability of evergreen oak forest to space, and the possible competition among species, we documented the life-form characteristics of vascular plants from 15 different Q. aquifolioides communities along an elevational gradient from 2200 to 3600 m on Balang Mountain, Wolong Nature Reserve, SW China. The plant life forms of the community were mainly composed of Phanerophytes (36.01%), followed by Chamaephytes (25.92%) and Geocryptophytes (29.36%), and Hemicryptophytes were the least common (0.92%). Phanerophytes played an important role, accounting for 21.74% to 50% of all species living on Balang Mountain, although its prevalence gradually decreased with increasing altitude. In contrast, Hemicryptophytes initially increased with increasing altitude but then decreased, and Geocryptophytes increased with altitude. Meanwhile, the proportion of Therophytes fluctuated with increasing altitude, accounting for between 8.94% and 5.67% of the species present. In addition, the abundance of the evergreen Phanerophytes plants decreased with increasing altitude, and the richness of evergreen Phanerophyte species was lower than that of deciduous Phanerophytes. At 3300 m, the Macro-and Mesophanerophytes accounted for only 3.09% and 4.26% of the species present, respectively, this indicated that life-form characteristics of evergreen oak forest were gradually weakening. Finally, comparative analysis of the plant life-form characteristics of different plant communities indicated that the Q. aquifolioides forest is different from other special types of evergreen broad-leaved forest.
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