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Bulletin of Botanical Research ›› 2018, Vol. 38 ›› Issue (3): 433-443.doi: 10.7525/j.issn.1673-5102.2018.03.016

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Diversity and Ecological Characteristics of Bryophytes from Peak Cluster under the Background of Karst Urban

LI Ze-Ke1,2, WU Qi-Mei1,2, WANG Zhi-Hui3, ZHANG Zhao-Hui1,2   

  1. 1. Key Laboratory forInformation System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001;
    2. State Key Lab Incubation Base for karst Mountation Ecology Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001;
    3. School of Life Sciences, Guizhou Normal University, Guiyang 550001
  • Received:2017-12-20 Online:2018-05-15 Published:2018-05-17
  • Supported by:
    National Natural Science Foundation(31760050, 31760043);The Science and Technology Cooperation Program of Guizhou Province(LH[2015]7778)

Abstract: We studied the diversity and ecological characteristics of bryophytes on three peak clusters in the Yunyan district of Guiyang City, Guizhou Province. The results are as follows:(1) A total of 62 bryophytes from 31 genera and 13 families were recorded. Among them there are 2 species of liverworts belonging to 1 genus and 1 family, 60 species of mosses belonging to 12 families and 30 genera; (2) There are three life-forms of bryophytes, mainly including wefts and turfs accounting for 61.3% and 35.5%, respectively; (3) The richness index of bryophyte species in three peaks cluster are in the descending order of Xianrendong Mountain, Zhaobi Mountain, and Dong Mountain. The Pielou index of bryophytes in three peaks cluster has little difference, showing that the distribution of individual species is more uniform. The similarity index results show that the bryophyte species of Dong Mountain and the Zhaobi Mountain, and Xianrendong Mountain are quite different. One of the important reasons for the differences is lithology; (4) The number of the bryophyte species shows different law in mountain bottom, mountain side and mountain top, which may be caused by human disturbance; (5) A Canonical Correspondence analysis showed that the main environmental factor affecting the distribution of bryophytes in Zhaobi Mountain and Dong Mountain is human disturbance, followed by altitude. The distribution of bryophytes in Xianrendong Mountain with mild human disturbance was affected by natural environmental factors(altitude, light and soil temperature). As the dominant species, Eurohypnum leptothallum well inhabited in harsh natural environment with strong human disturbances, which provide a potential value for improving the deteriorating environment.

Key words: karst urban, bryophyte of peak cluster, diversity distribution, human disturbance, environmental factor

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