地理科学 ›› 1993, Vol. 13 ›› Issue (1): 57-61,96.doi: 10.13249/j.cnki.sgs.1993.01.57

• 论文 • 上一篇    下一篇

长白山近期火山爆发对高山亚高山植被的影响

刘琪璟1, 王战1, 王少先2   

  1. 1. 中国科学院沈阳应用生态研究所 沈阳 110015;
    2. 吉林省长白山国家级自然保护管理局 安图 133613
  • 收稿日期:1991-08-01 出版日期:1993-01-20 发布日期:1993-01-20

EFFECTS OF RECENT VOLCANIC ERUPTIONS ON ALPINE AND SUBALPINE VEGETATION IN THE CHANGBAI MOUNTAIN

Liu Qijing1, Wang Zhan1, Wang Shaoxian2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Bureau of Changbai Mountain Reserve, Jilin Province, Antu 133613
  • Received:1991-08-01 Online:1993-01-20 Published:1993-01-20

摘要: 距今1580±70年(公元408±70年)长白山火山爆发,植被遭严重破坏.火山锥体上部的偃松群落因历次火山爆发而消失.近期火山爆发前,高山、亚高山上部植被与现代相似,只是林线由原来海拔2200m 左右下降到现在的2000m.今后林线将继续回升.

Abstract: A lot of tree residues(wood fossil)were found under the pumice layer in alpine and subalpine vegetation in the Changbai Mountain.The residues of Betula ermanii and Pinus pumila distributed from 2050 m to 2160 m in the south slope.Based on 14C dating, the residues were covered by a volcanic eruption happened 1580?70 years(408?70 AD)ago.Pinus Pumila communities disappeared after volcanic eruptions.From 1200 m to 1300 m asl in the east slope,the tree residues are dominated by Larix olgensis,as well as Picea jezoensis var.komarovii,Abies nephrolepis and Betula platyphylla etc.The palaeovegetation is similar to the current.In 2150 m asl of the east slope where the current vegetation is tundra,the only species of residues found under the pumice is Larix olgensis.Because of volcanic eruptions,the timberline lowered from original 2200 m to current 2000m asl.The forest from 2000 m to 2200 m asl was replaced by tundra after the events.The timberline is getting higher,but very slow.In the bare land of volcanic rock, vegetation succession model is.lichenes-moss-vascular plant communities,and the pumice bare land is occupied directly by vascular plants.