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题名: Plant diversity and floristic characters of the alpine subnival belt flora in the Hengduan Mountains, SW China
作者: Xu, Bo1, 2; Li, Zhi-Min3; Sun Hang(孙航)1
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: alpine subnival belt ; floristic characters ; Hengduan Mountains ; plant diversity
英文摘要: 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.
出版日期: 2014-05-01
卷号: 52, 期号:3, 页码:271-279
DOI标识: 10.1111/jse.12037
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 1674-4918
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18134
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.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:
Xu,Bo;Li,Zhi-Min;Sun,Hang.Plant diversity and floristic characters of the alpine subnival belt flora in the Hengduan Mountains, SW China,JOURNAL OF SYSTEMATICS AND EVOLUTION,2014,52(3):271-279
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