【摘要】 对黑龙江省同江县 96—QP剖面从下至上划分 4个孢粉组合带 :1是以蒙古栎桦属蒿属苔草属禾本科水龙骨科为主组合带 ;2是以蒿属莎草科禾本科桦属栎属为主组合带 ;3是以桦属蒙古栎松属蒿属莎草科禾本科为主组合带 ;4是以松属桦属蒙古栎蒿属苔草属为主组合带。这 4个孢粉组合带清楚地反映了古植被、古气候演替 4个阶段 :依次为温性落叶阔叶林→针、阔叶混交林草原→以落叶阔叶树稍多的针、阔叶混交林草原→以松占优势的针、阔叶混交林。其气候变化是温暖湿润温和略干温和略湿温凉湿润。更多还原

【Abstract】 Based on the sporo pollen analysis and the 14 C dating from the Tongjiang region of 96 QP core, the four sporo pollen assemblages have been distinguished in ascendant order: Zone 1: Quercus mongolica-Betula-Artemisia-Carex -Gramineae-Polypodiaceae Zone. Zone 2: Artemisia -Cyperaceae-Gramineae- Betula-Quercus Zone. Zone 3: Betula-Quercus mongolica-Pinus-Artemisia -Cyperaceae-Gramineae Zone. Zone 4: Pinus-Betula-Quercus mongolica-Artemisia-Carex Zone. Sporo pollen zones mentioned above can clearly represent 4 evolutional stages of vegetation and climate. In ascendant order these stages are:the temperate deciduous broad leaved forest→conifer and deciduous broad leaved mixed forest grass→deciduous broad leaved forest containing coniferous tree grass→conifer as deciduous broad leaved mixed forest dominated by Pinus . The climatic variations are:warm and moist-temperate and little dry-temperate and little moist-cool and moist.更多还原