【摘要】 吕合地区晚第三纪孢粉植物群研究表明该植物群属北极第三纪植物区系 ,孢粉组合以被子植物为主 ,温带成分如Alnus、Betula、Carpinus、Corylus、Quercus、Castanea、Ulmus等 ,亚热带、热带成分如Cyclobalanopsis、Castanopsis、Liquidambar、Carya、Davidia、Ilex、Palmae等。吕合附近海拔较高的地带分布松科Abies、Tsuga、Pinus等针叶树种。吕合孢粉组合中温带成分比热带、亚热带成分花粉类型多 ,每种类型的花粉含量也多。植被类型为常绿落叶阔叶混交林 ,反映温暖湿润的亚热带气候类型。植物群对比揭示吕合植物群时代为中新世中晚期_上新世早期。更多还原

【Abstract】 The Neogene flora of Lühe belongs to Holarctic geoflora. Angiosperms are the dominated elements in this flora, such as Alnus,Betula,Carpinus,Ulmus,Corylus,Quercus,Cyclobalanopsis,Castanopsis,Carya,Castanea,Liquidambar,Davidia,Ilex, Palmae, etc. The vegetation type is evergreen and deciduous broad_leaved forest although some coniferous forests (Abies,Tsuga,Pinus etc) are present near the highlands. The assemblage of pollens and spores reflects a warm and humid subtropical climate. The geological age of Lühe ranges from Middle_Late Miocene to Early Pliocene, based on comparison with other floras.更多还原