Plant diversity and floristic characters of the alpine subnival belt flora in the Hengduan Mountains, SW China
Xu, Bo1,2; Li, Zhi-Min3; Sun, Hang1
Corresponding AuthorSun,H (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Biodivers & Biogeog,Kunming 650201,Peoples R China. ; hsun@mail.kib.ac.cn
2014-05-01
Source PublicationJOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
Volume52Issue:3Pages:271-279
Abstract

There have been few studies of the alpine subnival belt flora in the Hengduan Mountains (HM), which host remarkable biodiversity. To extend knowledge of this flora, we examined published florae, herbarium specimens, and field observations (and material) collected by both ourselves and others. In total, 942 seed plant species have been recorded in the belt, representing 168 genera and 48 families. Twenty-four large families (with 10 species) are present, represented by 873 species (92.68% of the total). These include Asteraceae, Saxifragaceae, and Brassicaceae (146, 82, and 71 species, respectively). There are also 27 large genera (represented by 10 species), collectively contributing 587 species (62.31%) to the flora, including Saxifraga, Corydalis, and Saussurea (75, 55, and 49 species, respectively). Areal elements represented by the highest numbers of genera are the North temperate, Sino-Himalaya, and Old World temperate elements (39.88%, 14.29%, and 12.50%, respectively), while the Hengduan Mountains, Sino-Himalaya, and Qinghai-Tibetan Plateau elements are most species-rich (355, 281, and 161 species, respectively), collectively accounting for 84.61% species of the known flora. Of these, 295 species (31.32%) are endemic to the Sino-Himalayan alpine subnival belt and 151 (16.03%) strictly endemic to the alpine subnival belt of the HM. These findings indicate that the flora is young, strongly differentiated, probably developed as a result of the plateau's uplift, and speciation has been accelerated by the harsh environment and strong heterogeneity of niches.

KeywordAlpine Subnival Belt Floristic Characters Hengduan Mountains Plant Diversity
Subject AreaPlant Sciences
DOI10.1111/jse.12037
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000335400300004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/18134
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yunnan Normal Univ, Sch Life Sci, Kunming 650031, Peoples R China
Recommended Citation
GB/T 7714
Xu, Bo,Li, Zhi-Min,Sun, Hang. Plant diversity and floristic characters of the alpine subnival belt flora in the Hengduan Mountains, SW China[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2014,52(3):271-279.
APA Xu, Bo,Li, Zhi-Min,&Sun, Hang.(2014).Plant diversity and floristic characters of the alpine subnival belt flora in the Hengduan Mountains, SW China.JOURNAL OF SYSTEMATICS AND EVOLUTION,52(3),271-279.
MLA Xu, Bo,et al."Plant diversity and floristic characters of the alpine subnival belt flora in the Hengduan Mountains, SW China".JOURNAL OF SYSTEMATICS AND EVOLUTION 52.3(2014):271-279.
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