摘要
在对小五台山北台北坡垂直带的植被进行全面考察的基础上,建立了垂直带的表土花粉谱,分析了白扦、华北落叶松和桦等物种的气候指示意义。研究表明:桦属和松属在表土中的花粉百分含量大于群落中植物的盖度,具超代表性;云杉的花粉百分含量与植物在群落中的盖度基本符合;落叶松由于花粉产量低,保存能力差,则具有低代表性。就其气候指示意义来说,白扦指示冷湿生境,华北落叶松指示冷干生境。桦属的生态幅度较宽,其中风桦最耐寒。
After a broad survey of the vertical zone in Beitai,Xiaowutaishan mountain, a surface pollen spectrum is established.The climatical significance of some important species,such as Picea meyeri,Larix principis ruprechtii and Betula is also analysed.This research demonstrated:Surface pollen content of Betula and Pinus is much more than their coverage in community,so they have extra representation; Surface Pollen content of Picea is corresponded with its coveragein community;Because Larix has low pollen productivity and bad preservation ability of pollen,it has low representation for its coverage in community.As for their climatical significance, Picea meyeri indicates cool wet habitat; Larix principis ruprechtii indicates cool dry climate; Betula has a broad ecological amplification, Betula albo sinensis has a natural inclination for cool climate, Betula platyphylla has a natural inclination for dry climate.
出处
《北京大学学报(自然科学版)》
CAS
CSCD
北大核心
1997年第4期475-484,共10页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金
关键词
表土花粉
垂直带
生态气候意义
小五台山
植被
Surface Pollen
Vertical zone
Eco climatical significance
Xiaowutai mountain