长白山西坡小叶章种群迅速扩张对火灾风险的影响

The Effect of Population Expansion of Deyeuxia Angustifolia on Fire Risk in Western Slope of Changbai Mountains

本文选择长白山西坡林线下缘为研究区,采用样方调查方法,对各种植物的频度、盖度和生长高度等生态指标进行分析,应用常规统计方法揭示小叶章在群落中的地位与影响,分析小叶章种群迅速扩张可能带来的火灾问题,结果表明小叶章通过生长高度的竞争优势强烈排斥其他植物,增加盖度,成为这个地带的优势种。小叶章在春秋两季是易燃物质,很容易引起火灾。因此应该采取一系列措施应对这种情况,使保护工作不断升级,维系长白山生态系统。

This article took the lower tundra of western slope of Changbai Mountains as the research object. A total of 125 quadrats were selected to understand population expansion of Deyeuxia angustifolia. The position and role of Deyeuxia angustifolia population in tundra community were revealed by normal analysis. The fire disaster was studied related to population expansion of Deyeuxia angustifolia. The results showed that The Deyeuxia angustifolia population becomes the dominant species using height advantage to push out other plants of tundra. Because Deyeuxia angustifolia is inflammable materials in autumn and spring,once the fire happens,inundated area is very large and the fire is very strong,which would cause big lost. Some measures should be used to cope with the fire. The ecosystem of Changbai Mountains can be protected by improving the ability of fireproof and fight fire.