Geographical Characteristics of Orchidaceae Plants in Qinling Mountains

doi:10.7525/j.issn.1673-5102.2020.01.005

Abstract

Abstract: The Qinling Mountains is one of the most abundant and highly differentiated areas with wild Orchidaceae plants in China. However, the systematic arrangement of Orchidaceae plants in this area has not yet been seen. The aim of this study is to provide certain basic data for the protection of plant biodiversity. On the basis of references and sorted out relevant data, we did supplementary investigation and collected specimen in the key areas of Orchidaceae plants in Qinling Mountains, made a list of Orchidaceae plants in Qinling Mountains, and analyzed their genera and species characteristics, floristic composition and spatial distribution pattern. There were 149 species of Orchidaceae plants belonging to 52 genera in Qinling Mountains, of which 70 species were endemic to China, accounting for 47% of the total species; life forms were terrestrial, epiphytic, semi-epiphytic and saprophytic, mainly terrestrial; Orchidaceae plants in Qinling Mountains were mainly distributed at altitudes of 800-3 400 m; hotspots were Southwest Longnan Mountains, Taibai-Foping Mountains and Funiu Mountains. At the same time, we concluded the floristic characteristics of Orchidaceae plants in Qinling Mountains:(1)rich in species and remarkable temperate traits; (2)ancient origin and coexistence of new and old species; (3)abundant endemic components; (4)accumulation of rare and endangered protected plants; (5)richness varies with habitats.

Key words: Qinling Mountains, Chinese endemic species, flora, geographical characteristics, Orchidaceae plants

CLC Number:

Q949.7

GAO Xu-Zheng, KANG Yong-Xiang, ZHANG Li-Li, KANG Yue-Cheng, GUO Ming. Geographical Characteristics of Orchidaceae Plants in Qinling Mountains[J]. Bulletin of Botanical Research, 2020, 40(1): 18-28.

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