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青藏高原东北缘表土花粉初步分析 被引量:5

A PRELIMINARY STUDY OF SURFACE POLLEN FROM THE NORTHEASTERN QINGHAI-TIBETAN PLATEAU,CHINA
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摘要 通过对青藏高原东北缘不同群落19个样点的表土花粉组合特征及其与植物群落之间关系的研究,发现:(1)针叶林和高山灌丛的花粉组合特征与植物群落有较好的对应关系,落叶阔叶林和针阔混交林的花粉组合基本上能反映植被群落特征,草本植物的花粉组合未能反映植物群落的数量特征;(2)主要花粉类型中松属、云杉属和桦属花粉具超代表性,杜鹃花科、杨属和柏科花粉具低代表性;(3)通过花粉相对含量降趋势对应分析(DCA)能较好地区分不同植被类型。该研究成果可为本地区及相似地区的古植被和古环境重建提供基础和验证资料。 In this paper 19 surface pollen samples from different communities of the northeastern Qinghai-Tibetan Plateau are analyzed for relationship between pollen and vegetation.We have found that the pollen assemblages of coniferous forests and alpine shrub seem to correspond well with their communities,deciduous forests and conifer pollen assemblages may represent the combinated characteristics of vegetational community moderately,and herbeous pollen assemblages are not well associated with their numerical characteristics of plant community.Pinus,Piceaand Betula are over-represented,whereas Ericaceae,Populus and Cupressaceae are under-represented pollen taxa.In addition,Detrended Correspondence Analysis(DCA)is effective to distinguish different plant communities.The research results can provide basic information and validation to reconstruct paleovegetation and paleoenvironment conditions in this place and similar areas.
作者 邱筱兰
机构地区 上饶师范学院
出处 《微体古生物学报》 CSCD 北大核心 2016年第1期65-74,共10页 Acta Micropalaeontologica Sinica
基金 国家自然科学基金(No.41172151 41372183)资助~~
关键词 表土花粉 降趋势对应分析(DCA) 花粉组合与植物群落 花粉代表性 青藏高原 surface pollen DCA analysis pollen assemblages and plant community pollen rep-resentation northeastern Qinghai-Tibetan Plateau China
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