High-Resolution Records of Lacustrine Sedimentology and Palynology Responding to Changes in Climate and Hydrology
详细信息
- 责任者：Yu Ge (Nanjing Institute of Geography and Limnology ; Chinese Academy of Sciences ; Nanjing 210008 ; China)
- 刊名：Acta Sedimentologica Sinica
- 出版年：2011
- 卷期：29(1)
- 关键词：湖泊沉积物 ; lake sediments ; 孢粉组合 ; palynological assemblage ; 气候 ; climate ; 湖北 ; Hubei Province
- 页码：p.118-124
- 图表：5 illus., 15 refs.
- 分类号：1400
- 出版序号：20120447
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
This paper studied high-resolution sedimentary pollen sequence (1.5 yr/e) of Wanghu Lake, in the middle reach of Yangtze River, and analyzed the relationships of changes in pollen types and contents, sediment granularity, and climate-hydrology features during the past hundred years when the lake turned from an open water system into closed basin. The author found synchronous changes among sedimentary granularity and pollen with precipitation and river discharge which all experienced 3~4 years and 9~11 years cycles in the time series, suggesting sedimentation responding to climate changes. This study may provide scientific basis to reconstruct past environmental changes using sediment and pollen records, and to understand bio-sedimentology dynamics in the lake sediments.