小五台山北台林线附近的植被及其与气候条件的关系分析

摘要/Abstract

摘要： 在野外调查的基础上,对小五台山林线的范围进行了划分,探讨了林线附近植物种类组成和多样性随海拔高度的变化,并对林线及其附近分布的主要乔木树种的气候指示意义进行了分析.结果表明,小五台山北台北坡的林线是一种渐变式的林线,其海拔高度范围为2620～2800m.林线中草本植物组成丰富,其多样性高于亚高山草甸和山地针叶林.从林线中心向亚高山草甸和森林带,物种替代率逐渐升高,在林线的边缘达到最高.桦、白扦、华北落叶松可作为环境变迁研究中的生态指示种.定量地给出了各主要树种在研究区内分布范围的气候指标.对分析我国暖温带北段的植被特征以及这一地区植被对气候变化的响应提供了定量化依据.

关键词: 林线, 植被气候关系, 物种多样性, 暖温带, 小五台山, 人口时空格局, 城市化, 北京, 城市周边区域, 生态系统质量

Abstract: On the basis of field investigations,the timberline range of Beitai,the Xiaowutai Mountains was carved up, and the changes in the makeup and diversity of plants with the altitude were discussed.The results showed that the timberline with gradual changes in the northern slope of Beitai ranged from 2620～2800m.In timberline,herbaceous plants were rich,and the diversity was higher than that in coniferous forest and sub alpine meadow zones.The turnover rates of species were gradually hoisting from the centre of timberline to sub alpine meadow and forest zones,and highest at the edge of timberline. Betula,Picea meyreri and Larix principis-ruprechtii species were the ecological indicator for research on environmental changes.Climate indication significance of these arbor species distributed in and near the timberline was also discussed.

Key words: Timberline, Vegetation climate relationship, Species diversity, Temperate zone, Xiaowutai Mountains, Beijing., urbanization, population spatio-temporal pattern, ecosystem quality, urban surrounding region

中图分类号:

Q948.5

于澎涛, 刘鸿雁, 崔海亭. 小五台山北台林线附近的植被及其与气候条件的关系分析[J]. 应用生态学报, 2002, (5): 523-528.

YU Pengtao, LIU Hongyan, CUI Haiting . Vegetation and its relation with climate conditions near the timberline of Beitai,the Xiaowutai Mts., Northern China[J]. Chinese Journal of Applied Ecology, 2002, (5): 523-528.

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