生物多样性 ›› 2001, Vol. 09 ›› Issue (4): 319-328.DOI: 10.17520/biods.2001048

• 论文 •    下一篇

云南横断山区蚤类物种多样性的地理分布趋势与重要环境因素的关系

龚正达,吴厚永,段兴德,冯锡光,张云智,刘泉   

  1. 1 (云南省流行病防治研究所,  大理 671000)
    2 (军事医学科学院微生物流行病学研究所,  北京 100071)
  • 收稿日期:2001-01-19 修回日期:2001-04-09 出版日期:2001-11-20 发布日期:2001-11-20
  • 通讯作者: 龚正达

The relationship between the geographical distribution trends of flea species diversity and the important environmental factor in the Hengduan Mountains, Yunna

GONG Zheng-Da1,WU Hou-Yong2,DUAN Xing-De1,FENG Xi-Guang1,ZHANG Yun-Zhi1,LIU Quan2   

  1. 1 Institute of Epidemiology of Yunnan Province , Dali  671000
    2 Institute of Microbiology and Epidemiology , Academy of Military Medical Sciences , Beijing 100071
  • Received:2001-01-19 Revised:2001-04-09 Online:2001-11-20 Published:2001-11-20
  • Contact: GONG ZhengDa

摘要: 根据云南横断山区具代表性的7个山系共9个样区山地蚤类及其宿主动物的垂直分布调查结果,并参考以往的部分调查资料,对所获数据进行统计学处理,应用不同山系样区各垂直带蚤类物种多样性的平均值作为指标,就云南横断山区蚤类物种多样性的地理分布趋势和规律,与宿主动物和重要环境因素的关系等问题进行了分析和探讨。结果显示,蚤类物种多样性的地理分布趋势是由西北→南→东→北呈递减的趋势。与变化趋势密切相关的重要因素是水湿条件,其次是经度的影响。另外还与蚤类的丰富度、地理环境、垂直带和人们的生产活动等因素有关。研究认为,形成蚤类与宿主动物间多样性地理分布趋势上的差异的主要原因是对环境的适应性不同,其中水湿条件就是很重要的因素之一。研究还发现,横断山蚤类在我国蚤类区系中是多样性最高的地区,它充分地反映了横断山区栖息地异质性对物种数的重要影响,并说明栖息地异质性对物种—面积关系起着重要作用。

关键词: 温泉蓝藻, 物种多样性, 云南

AbstractThis paper is based on investigations of the vertical dist ribution of fleas and their host s in nine sample areas in seven mountain ranges and refers to related data analyzed with statistical methods. According to the standardized mean of the diversity index for fleas in the vertical zones of each mountain range , the paper analyses and discusses the problems of the relationship of host s and of important environmental factors with the geographical dist ribution t rends and rules of flea species diversity in Yunnan Province’s Hengduan Mountains. The result s show geographical dist ribution t rends such that flea species diversity gradually decreases f rom the northwest to the south and the northeast . This t rend is related primarily with humidity and rainfall , then secondarily with latitude , flea richness , geographical environmental condition , vertical zonation , human activities , etc. It is concluded that the different geographical dist ribution t rends between fleas and host s was the main cause of their different adaptability to the environment , of which humidity is one of the important factors. In addition , the flea species richness in the Hengduan Mountains is the highest in the Chinese flea fauna. It was demonst rated that habitat heterogeneity in the Hengduan Mountains affect s species diversity , which act s on the relationship between species and area.

Key words: thermal cyanophytes, species diversity, Yunnan Province