地理科学 ›› 2020, Vol. 40 ›› Issue (6): 1010-1018.doi: 10.13249/j.cnki.sgs.2020.06.017

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浙江嵊州西白山表土花粉的初步研究

郝秀东1(), 欧阳绪红1,*(), 郑丽波2, 钟华3, 汪美芳4   

  1. 1. 南宁师范大学北部湾环境演变与资源利用教育部重点实验室/广西地表过程与智能模拟重点实验室,广西 南宁 530001
    2. 浙江省水文地质工程地质大队,浙江 宁波 315000
    3. 核工业金华工程勘察院绍兴分院,浙江 绍兴 312000
    4. 浙江省嵊州市鹿山街道办事处,浙江 嵊州 312400
  • 收稿日期:2019-05-12 出版日期:2020-06-01 发布日期:2020-12-07
  • 通讯作者: 欧阳绪红 E-mail:xiudonghao@126.com;1310825@tongji.edu.cn
  • 作者简介:郝秀东(1980−),男,安徽舒城人,博士,副研究员,主要从事孢粉学与过去全球变化研究。E-mail: xiudonghao@126.com
  • 基金资助:
    国家自然科学基金项目(41861020)、广西自然科学基金项目(2018GXNSFAA281264)、广西科技计划项目(桂科AD19245018)、南宁师范大学科研启动项目(0819-2017L23, 08192019L39)、北部湾环境演变与资源利用教育部重点实验室开放基金项目(GTEU-KLXTJJ-201712, NNNU-KLOP-X1919)、广西地表过程与智能模拟重点实验室开放基金项目(NNNU-KLOP-K1925)资助

Preliminary Pollen Analysis of Surface Samples from the Xibai Moutain in Shengzhou City, Zhejiang Province

Hao Xiudong1(), Ouyang Xuhong1,*(), Zheng Libo2, Zhong Hua3, Wang Meifang4   

  1. 1. Key Laboratory of Environment Change and Resource Use in Beibu Gulf, Nanning Normal University/Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Nanning 530001, Guangxi, China
    2. Zhejiang Hydrogeologic and Engineering Geological Brigade, Ningbo 315000, Zhejiang, China
    3. Jinhua Nuclear Industry Engineering Investigation Institute, Shaoxing 312000, Zhejiang, China
    4. Lushan Subdistrict Office, Shengzhou 312400, Zhejiang, China
  • Received:2019-05-12 Online:2020-06-01 Published:2020-12-07
  • Contact: Ouyang Xuhong E-mail:xiudonghao@126.com;1310825@tongji.edu.cn
  • Supported by:
    National Natural Science Foundation of China (41861020), Guangxi Natural Science Foundation (2018GXNSFAA281264), Guangxi Science and Technology Plan Project (AD19245018), Scientific Research Staring Foundation of Nanning Normal University (0819-2017L23, 08192019L39), Open Fund of Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education (GTEU-KLXTJJ-201712, NNNU-KLOP-X1919), Open Fund of Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation (NNNU-KLOP-K1925).

摘要:

通过对浙江嵊州西白山香榧林、针阔混交林、茶园及竹园16份苔藓的花粉分析,研究其表土花粉与现代植被的关系。结果表明:① 研究区植物孢粉共由50科属组成,以乔木花粉(主要为香榧和马尾松)为优势,含量为71.5%~92.9%,草本花粉次之,含量为5.3%~24.7%,蕨类孢子含量最低,含量为1.5%~7.2%,表土花粉组合基本上反映了该区植被的总体特征;② PCA结果显示,香榧和香榧林均能很好的区分出来,说明其具有很好的分异性;③ 香榧花粉在香榧林的含量较高,平均高达41.1%,但在林外,其含量则迅速降低,为5.2%~9.8%,可见香榧花粉的传播距离非常有限。该结果建议当地层中香榧花粉化石的含量达到10%,就可以初步断定在研究区附近有古香榧林的存在。

关键词: 表土花粉, 香榧林, 西白山, 嵊州

Abstract:

Pollen analysis is one of the best and possible approaches for the quantitative reconstruction of paleobotany, paleoclimate, and palaeoenvironment. Pollen is affected by many factors such as its own morphological structure, pollen production, sedimentation, transmission, preservation, and external environment, making the relationship between it and vegetation not a simple linear relationship. Therefore, it is very important to study the relationship between topsoil pollen and modern vegetation. In this article, we reveal the relationships between surface pollen spectra and modern vegetation from the Torreya forests, mixed broadleaf-conifer forests, tea garden and bamboo forests along the Xibai Mountain, Shengzhou City, Zhejiang Province. The pollen analysis results of surface soil samples show that: 1) 50 pollen taxa (genera or family) were identified, with the arboreal pollen percentages are 71.5%-92.9%, where Torreya grandis and Pinus massoniana are dominant pollen assemblages, the herbaceous pollen with 5.3%-24.7%, and then fern spores with only 1.5%-7.2%. In general, pollen assemblages are consistent with vegetation composition, though some differences also exist in different vegetation types. 2) The PCA results indicate that both Torreya grandis and the Torreya forests can be distinguished from the surface pollen samples. 3) The results indicate that the percentage of Torreya grandis pollen may reach 41.1% within the pure Torreya forests, but decreased abruptly when outside the forests (with only 5.2%-9.8%), indicating a poor dispersal ability. Therefore, we suggested that the ancient Torreya forests should exist locally when Torreya grandis pollen values exceed 10%.

Key words: topsoil pollen, Torreya forests, Xibai Mountain, Shengzhou City

中图分类号: 

  • Q914.5