Plant Diversity ›› 2012, Vol. 34 ›› Issue (4): 317-325.DOI: 10.3724/SP.J.1143.2012.11152

• Articles •     Next Articles

Analysis on the Geographical Distribution Characteristics of Angiopteridaceae and Its Causes in Yungui Plateau and Hengduan Mountains, China

 WANG  Chong-Yun-1, YANG  Bin-1, HE  Zhao-Rong-2   

  1. 1 Institute of Ecology and Geobotany, Yunnan University, Kunming 650091, China; 2 School of Life Sciences, Yunnan University,
    Kunming 650091, China; 3 College of Agriculture and Biology, Dali College, Dali 671003, China
  • Received:2011-11-08 Online:2012-08-25 Published:2012-04-13


According to the specimens of the Angiopteridaceae reserved in PYU, PE, KUN, and IBSC, and other published data, a GIS database of Angiopteridaceae had been established to analyse the diversity and endemism of species in Yunnan Province, China. Furthermore, the characteristics of geographical distribution of the Angiopteridaceae in Yungui Plateau and Hengduan Mountains were illustrated. The results were as follows: i. Angiopteridaceae had diverse species and were widely distributed in Yunnan, from alt. 100m to alt. 2400m; ii. Southeastern Yunnan was the center of species diversity and endemic distribution, and species diversity declines from southeast towards west and northwest in Yunnan; iii. Comparing 2 genera of Angiopteridaceae in Yunnan, Archangiopteris was relatively lower in species diversity but its endemic level was higher than Angiopteris. Next, the causes driving the distribution pattern of 5 widespread species and 1 species that growing only in valley habitat, as well as the distribution pattern of 5 endemic species were analysed. As an elementary conclusion was made, the distribution pattern of the widedistributed species was formed before the Quaternary glaciation, and the pattern of valley species was formed after the Tertiary. Meanwhile, the speciation of endemic species was mainly due to natural hybridization and edge effect.

Key words: Angioteridaceae, Angiopteris, Archangiopteris, Geographical distribution characteristics, Distributing pattern

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