中国地理科学 ›› 2015, Vol. 25 ›› Issue (4): 451-461.doi: 10.1007/s11769-015-0768-8

• 论文 • 上一篇    下一篇

Vegetation Development and Water Level Changes in Shenjiadian Peatland in Sanjiang Plain, Northeast China

WANG Chunling1,3, ZHAO Hongyan2, WANG Guoping1   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. Key Laboratory of Wetland Ecology and Vegetation Restoration, Northeast Normal University, Changchun 130024, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2014-06-25 修回日期:2014-09-30 出版日期:2015-04-27 发布日期:2015-07-30
  • 通讯作者: WANG Guoping. E-mail: wangguoping@iga.ac.cn E-mail:wangguoping@iga.ac.cn
  • 基金资助:

    Under the auspices of Chinese Academy of Sciences/State Administration of Foreign Experts Affairs (CAS/SAFEA) International Partnership Program for Creative Research Teams (No. KZZD-EW-TZ-07), National Basic Research Program of China (No. 2012CB956100), National Natural Science Foundation of China (No. 41271209, 41401099)

Vegetation Development and Water Level Changes in Shenjiadian Peatland in Sanjiang Plain, Northeast China

WANG Chunling1,3, ZHAO Hongyan2, WANG Guoping1   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. Key Laboratory of Wetland Ecology and Vegetation Restoration, Northeast Normal University, Changchun 130024, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-06-25 Revised:2014-09-30 Online:2015-04-27 Published:2015-07-30
  • Contact: WANG Guoping. E-mail: wangguoping@iga.ac.cn E-mail:wangguoping@iga.ac.cn
  • Supported by:

    Under the auspices of Chinese Academy of Sciences/State Administration of Foreign Experts Affairs (CAS/SAFEA) International Partnership Program for Creative Research Teams (No. KZZD-EW-TZ-07), National Basic Research Program of China (No. 2012CB956100), National Natural Science Foundation of China (No. 41271209, 41401099)

摘要:

This paper documents a 7800-year proxy record from the Shenjiadian peatland on the Sanjiang Plain in Northeast China. High-resolution plant macrofossil and colorimetric humification methods were used to reconstruct the vegetation and hydrologic history from a 193 cm-long sedimentary profile. Detrended correspondence analysis (DCA) was applied to transform the raw plant macrofossil data into latent indices of peatland water level. The vegetation community transited from an Equisetum fluviatile community to a Carex lasiocarpa community at approximately 3800 cal yr BP and was followed by a Carex-shrub community at approximately 480 cal yr BP. Based on the plant macrofossil DCA axis 1 scores and humification values, we distinguished four hydrologic periods: a wet period from 7800 cal yr BP to 4500 cal yr BP, dry periods up to 1600 cal yr BP, drier periods until 300 cal yr BP, and the driest period from 300 cal yr BP until the present. Through a comparison with other climate records, we suggest that the East Asian summer monsoon (EAM) was the main driving force for vegetation and water level changes to the Shenjiadian peatland through its impacts on precipitation.

关键词: plant macrofossils, humification, Holocene, peatland, Northeast China

Abstract:

This paper documents a 7800-year proxy record from the Shenjiadian peatland on the Sanjiang Plain in Northeast China. High-resolution plant macrofossil and colorimetric humification methods were used to reconstruct the vegetation and hydrologic history from a 193 cm-long sedimentary profile. Detrended correspondence analysis (DCA) was applied to transform the raw plant macrofossil data into latent indices of peatland water level. The vegetation community transited from an Equisetum fluviatile community to a Carex lasiocarpa community at approximately 3800 cal yr BP and was followed by a Carex-shrub community at approximately 480 cal yr BP. Based on the plant macrofossil DCA axis 1 scores and humification values, we distinguished four hydrologic periods: a wet period from 7800 cal yr BP to 4500 cal yr BP, dry periods up to 1600 cal yr BP, drier periods until 300 cal yr BP, and the driest period from 300 cal yr BP until the present. Through a comparison with other climate records, we suggest that the East Asian summer monsoon (EAM) was the main driving force for vegetation and water level changes to the Shenjiadian peatland through its impacts on precipitation.

Key words: plant macrofossils, humification, Holocene, peatland, Northeast China