| 抚顺盆地中-晚始新世古植被与古气候 |
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| 引用本文： | 韦一,杨兵,夏浩东,邓会娟. 抚顺盆地中-晚始新世古植被与古气候[J]. 地球科学, 2021, 46(5): 1848-1861. DOI: 10.3799/dqkx.2020.142 |
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| 作者姓名： | 韦一 杨兵 夏浩东 邓会娟 |
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| 作者单位： | 1.华北科技学院安全工程学院, 河北廊坊 065201 |
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| 基金项目： | 国家自然科学基金项目41702366中央高校基本科研业务费项目3142018004中央高校基本科研业务费项目3142018025 |
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| 摘 要： | 为重建东北地区中-晚始新世古气候,对抚顺盆地孢粉进行传统鉴定,利用有序聚类分析划分孢粉组合,结合共存分析法对孢粉组合定量化以建立研究区的古气候参数值 . 鉴定出孢粉 67 属,划分出(I)Quercoidites-Tricolpopollenites- Betulaceoipollenites 组合;(Ⅱ) Picea...
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| 关 键 词： | 抚顺盆地 始新世 孢粉组合 古气候 共存分析法 环境地质 |
| 收稿时间： | 2020-06-15 |
Paleovegetation and Paleoclimate during Mid-Late Eocene in Fushun Basin |
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| Wei Yi,Yang Bing,Xia Haodong,Deng Huijuan. Paleovegetation and Paleoclimate during Mid-Late Eocene in Fushun Basin[J]. Earth Science-Journal of China University of Geosciences, 2021, 46(5): 1848-1861. DOI: 10.3799/dqkx.2020.142 |
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| Authors: | Wei Yi Yang Bing Xia Haodong Deng Huijuan |
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| Abstract: | For rebuilding the paleoclimate during Mid-Late Eocene in Northeast China, it analyzes the palynological characteristics in Fusun basin. Combining coniss analysis with co-existence approach, it quantitatively reconstructs the paleoclimate parameters in research area. 67 genera are identified and divided into 5 assemblages as: (Ⅰ) Quercoidites-Tricolpopollenites-Betulaceoipollenites Assemblage; (Ⅱ) Piceapollis-Tiliaepollenites-Chenopodipollis Assemblage; (Ⅲ) Quercoidites-Betulaceoipollenites-Ulmipollenites Assemblage; (Ⅳ)Pinuspollenites-Abietineaepollenites-Ephedripites Assemblage; (Ⅴ) Betulaceoipollenites-Taxodiaceaepollenites-Quercoidites Assemblage. The age of assemblages Ⅰ, Ⅱ, Ⅲ belongs to Middle Eocene, and the age of assemblages Ⅳ, Ⅴ belongs to Late Eocene. The vegetation types of the basin experienced the transformation as deciduous broadleaf forest-steppe type vegetation→coniferous and broadleaf mixed forest-steppe type vegetation→deciduous broadleaf forest-steppe type vegetation→ coniferous forest→coniferous broadleaf mixed forest. The climatic zone changed from subtropical-temperate to temperate, the humidity changed from humid to semi-humid, and the average annual moderate and annual average rainfall decreased. This trend is coupled with the global temperature trend. |
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