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Plant Diversity ›› 1994, Vol. 16 ›› Issue (S6): 1-3.

• 研究论文 •    

掸邦-马来亚板块位移对独龙江植物区系的生物效应

李恒   

  1. 中国科学院昆明植物研究所
  • 出版日期:1994-12-26 发布日期:1994-12-26

THE BIOLOGICAL EFFECT TO THE FLORA OF DULONGJIANG CAUSED BY THE MOVEMENT OF BURMA-MALAYA GEOBLOCK

LI Heng   

  1. Kunming Institute of Botany, Chinese Academy of Sciences
  • Online:1994-12-26 Published:1994-12-26

摘要:

本文介绍了独龙江地区所在的掸邦-马来亚板块的简史,这一板块自中新世以来向北移动了4度-5度纬度,并向顺时针方向发生了右旋,位于右旋轴另一端的河口及其邻近地区相应发生了南移,但幅度较小。掸邦一马来板块位移给独龙江植物区系所产生的生物效应表现为:1.由于纬度错位,独龙江河谷热带植被类型被亚热带湿润常绿阔叶林所替代,独龙江原来的古南大陆热带植物区系蜕变为现代的东亚温带植物区系;2.从滇东南或滇南至独龙江的一些连续分布区被间断为滇西北和滇东南对角分布;3.在云南形成了一条滇西北-滇东南走向的生态地理对角线,即生物对角线,使独龙江多种植物仅能在对角线以西生存和繁衍。

关键词: 掸邦-马来亚板块, 位移, 独龙江植物区系, 生物效应

Abstract:

This is a brief introduction to the history of Burma-Malaya Geoblock. Since the Miocene Epoch, the Geoblock has moved4 -5 northward and rotated in a clockwise direction, while Hekou and its adjacent areas on the other end of the axis shifted southward but in a little extent. The biological effect to the flora of Dulongjiang area caused by the movement of Burma-Malaya Geoblock can be included into the following aspects.

Key words: Burma-Malaya Geoblock, Movement, Flora of Dulongjiang, Biological Effect