Floristic characteristics and affinities in Lao PDR, with a reference to the biogeography of the Indochina peninsula

The flora of Laos is composed of 5,005 species in 1,373 genera and 188 families of seed plants. Floristic and geographical attributes of the flora were analyzed. Tropical floristic elements at the family and generic levels contributed a majority (62.23% of the families and 82.30% of the genera) of the flora, of which the dominant geographical elements were pantropical distribution (42.02% of families) and tropical Asian distribution (30.08% of genera). This revealed that the flora of Lao PDR is tropical in nature and has a conspicuously tropical Asian affinity. Compared with the neighbouring countries of the Indochina peninsula, the flora of Laos has similar floristic composition and geographical elements. The floras of these Indochinese countries have similarities of more than 77.84% at the generic level, which suggests that they compose an affiliated biogeographical region. However, the flora of Laos showed the highest similarity to the flora of Vietnam (92.13%), followed by Myanmar (86.01%) at the generic level, but has less East Asian and North Temperate elements than Vietnam, and less North Temperate elements than Myanmar. These differences among the compared countries could be explained by the extrusion of the Indochinese block with the uplift of the Himalayas.

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Additional Info

Field Value
Document type Reports, journal articles, and research papers (including theses and dissertations)
Language of document
  • English
Topics
  • Biodiversity
  • Forests and forestry
Geographic area (spatial range)
  • Lao People's Democratic Republic
Copyright Yes
Version / Edition 1
License Creative Commons Attribution
Contact

Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, P. R. China; zhuh@xtbg.ac.cn

Author (individual) Zhu, Hua
Publication date 2017
Pagination 13
Date uploaded September 30, 2018, 02:14 (UTC)
Date modified December 20, 2019, 06:12 (UTC)