地理科学 ›› 2001, Vol. 21 ›› Issue (3): 242-249.doi: 10.13249/j.cnki.sgs.2001.03.242

• 论文 • 上一篇    下一篇

西辽河平原东部沼泽发育与中全新世早期以来古环境演变

杨永兴1, 黄锡畴1, 王世岩1, 孔昭宸2   

  1. 1. 中国科学院长春地理研究所 吉林长春 130021;
    2. 中国科学院植物研究所 北京 100044
  • 收稿日期:1999-01-03 修回日期:1999-06-30 出版日期:2001-05-20 发布日期:2001-05-20
  • 基金资助:
    国家自然科学基金资助项目(49771002和49070061)。

Study on the Mire Development and Palaeogeographical Environment Change Since the Early Period of the Holocene in the East Part of the Xiliaohe Plain

YANG Yong-xing1, HUANG Xi-chou1, WANG Shi-yan1, KONG Zhao-chen2   

  1. 1. Changchun Institute of Geography, Chinese Academy of Sciences, Changchun, Jilin 130021;
    2. Institute of Botany, Chinese Academy of Scences, Beijing 100093
  • Received:1999-01-03 Revised:1999-06-30 Online:2001-05-20 Published:2001-05-20

摘要: 根据典型沼泽剖面14C测年及其树木年轮校正、孢粉分析、粘土矿物X-衍射分析、泥炭植物残体鉴定和沉积物的化学元素聚集与迁移资料,研究了中全新世以来西辽河平原东部沼泽发育过程与古环境演变及其二者的关系。结果表明,位于生态环境过渡带、脆弱带的沼泽发生、发育对环境变化尤为敏感。中全新世早期以来,环境变化频繁,由此导致沼泽发育出现多次形成、发育、退化、消亡、再生循环变化。沼泽发育与古环境演变可划分为6个时期:中全新世早期沼泽孕育与萌芽发育期;中全新世中期沼泽旺盛发育期;中全新世中晚期沼泽间断发育期;中全新世晚期沼泽退化发育期;晚全新世早期沼泽复苏期;晚全新世晚期沼泽消亡期。距今5800年左右为本区全新世沼泽最早发育期。沼泽发育也遵循富营养沼泽长期发展的模式。

Abstract: This paper makes a preliminary approach to the relationship between mire development and palaeogeographical environment changes since the early period of middle Holocene in the east part of the Xiliaohe Plain by means of dating, X-ray diffraction of clay mineral, analyses of spore-pollen and plant residual, content and translation and transformation of chemical elements, etc. The formation and development of mire located in the ecotone and ecological transition zone are highly sensitive to the environment change. The environment changes have occurred frequently since the early period of middle Holocene which results in cycle change of formation, development, degeneration and death of mire in its development process. The close relationship was found between mire development and palaeogeographical environment change. It can be divided into six periods, i.e. the breeding and germinating development period in the early period of the middle Holocene (6400-5100a B. P.), the vigorous development period in the middle period of middle Holocene (5100-4300 a B. P.), the interruption development in the middle and late period of middle Holocene (4300-3200 a B. P.), the degeneration development period of the late period of middle Holocene (3200-2100 a B. P.), the resuscitation development period of the early period of late period of late Holocene (1100-0a B. P.). The oldest mire was formed in about 5800a B. P. in the east part of the Xiliaohe plain in the Holocene. The mire development follows the model of long period development of eutrophic mire. The Maili bog-section, Horqin Zuoyi Houqi can be considered as one of the standard section of the Holocene in the east part of the Xiliaohe Plain. The peat deposition is characterized with mult-period in this area in the Holocene.

中图分类号: 

  • P531