一万年以来陕西富平的植被与气候环境演化  

Evolution of vegetation and climate environment since 10kaBP in Fuping,Shaanxi

作　　者：李秉成[1] 

机构地区：[1]长安大学环境科学与工程学院,陕西西安710054

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第4期670-673,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(49901611)

摘　　要：通过对黄土高原中部的陕西富平剖面的地质调查、密集采样和31个样品的孢粉分析,显示了该地区全新世植被和气候环境的演化阶段。将孢粉图式划分为Ⅰ、Ⅱ、Ⅲ三个带分别代表早、中、晚三个时期的孢粉带:Ⅰ带为松—菊—香蒲组合带,以草本植物花粉占优势,针叶树植物花粉含量较高为特征;Ⅱ带为松—栎—蒿—环纹藻组合带,以乔木花粉增加,草本植物花粉减少为特征;Ⅲ带为栎—松—蒿组合带,以草本植物花粉增加,乔木花粉减少为特征。结果表明:早全新世植被为森林草原—干草原,气候干凉—干冷;中全新世植被为森林草原与针阔叶混交林草原,气候温暖半湿润;晚全新世植被为森林草原或疏林草原,气候干旱偏暖—温凉干旱。In this study, the sporopollen diagram was divided into three different zones based on geological investigation, thirty-one intensive samples, sporopollen analysis at cross section of Shaanxi-Fuping in the middle of loess Plateau and the evolution stages of vegetation and climate environment on Holocene of the studied area. These three zones represent early, middle and later period respectively. The first zone is a combinatorial zone of Pinus-Compositae-Typha with the characteristics of predominant herbaceous plant pollen and high conifer pollen. The second zone is a combinatorial zone of Pinus-Quercus-Artemisia-Concentricystes, which is characterized by the increase of arbor pollen and the decrease of herbaceous pollen. The third zone named as a combinatorial zone of Quercus-Pinus-Artemisia is marked by the increase of herbal pollen and the decrease of arbor pollen. The study result indicates that the vegetation of early HoloCene was forest grassland - dry grassland, the climate was dry and cool - dry and cold. In middle Holocene, the vegetation was forest grassland, aciculignosa and aeslilignosa grassland, the climate was warm and wet. In late Holocene, the vegetation was forest grassland, the climate was droughty and warm - warm, cool and droughty.

关 键 词：一万年以来 黄土高原 陕西富平 植被和气候 

分 类 号：P534.632[天文地球—第四纪地质学] P532[天文地球—古生物学与地层学]