地理研究

地理研究 ›› 1992, Vol. 11 ›› Issue (4): 38-46.doi: 10.11821/yj1992040005

• 论文 • 上一篇    下一篇

大连地区全新世泥炭沉积环境及海面波动*

刘国海1, 高善明2, 李元芳2, 严富华3   

  1. 1. 辽宁师范大学;
    2. 中国科学院、国家计划委员会地理研究所;
    3. 国家地震局地质研究所
  • 出版日期:1992-12-15 发布日期:1992-12-15
  • 基金资助:
    * 国家自然科学基金948807号;中国科学院87-45-03号重大项目

SEA LEVEL FLUCTUATION AND DEPOSIT ENVIRONMENT OF THE HOLOCENE PEAT IN DALIAN REGION

Liu Guohai1, Gao Shanming2, Li Yuanfang2, Yan Fuhua3   

  1. 1. Liaoning Normal University;
    2. Institute of Geography. Chinese Academy of Sciences and State Planning Commission of the People's Republic of China;
    3. Institute of Geology, State Bereau of Seismology
  • Online:1992-12-15 Published:1992-12-15

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摘要： 采用孢粉分析及14C测年,本文认为大连沿海分布的泥炭层主要形成于中全新世中晚期及晚全新世早期的暖湿、温湿气候下富营养性湖沼环境。属草本植物为主的草本-木本型泥炭,沉积速度一般为0.7-1.1mm/a。全新世海侵,在辽宁海岸带约距今7000年以前达最大范围。近5000年来,海面在下降过程中有波动和稳定时期。

关键词: 全新世, 沉积环境, 海面波动, 大连地区

Abstract: Dalian Region belongs to a wet and semi-wet monsoon climate of warm-temperate zone with an annual average temperature between 8 and 10 centigrade,and an annual precipitation of 550-1000 mm.There is a landscape of the conifer and broadleaf forest.The natural forest with pine and oak,ect.is only found in the lower mountainous and hilly areas.Coastal zone has been developed earlier and most of them have become farmlands I.Deposit Environment of PeatThe alongshore peat was mostly deposited in the nutritional cacustrine-swamp environment under the warm-temperate wetted climate from middle-late stage of middle Holocene to early stage of the late Holocene.It belongs to herb-xylophyta type mainly with herbaceous plant and generally the depositiny rate is about 0.7-1.1 mm/a.