Floristic divergence of the evergreen broad-leaved forests in Yunnan, southwestern China | |
Zhu, Hua | |
刊名 | PHYTOTAXA |
2019 | |
卷号 | 393期号:1页码:1-20 |
关键词 | Southern Yunnan Species Composition Rain-forest Sw China Vegetation Flora Classification Diversity Xishuangbanna Biogeography |
ISSN号 | 1179-3155 |
DOI | 10.11646/phytotaxa.393.1.1 |
英文摘要 | The Yunnan boast three broad-leaved forests, the semi-wet evergreen broad-leaved forest (SWEB) occurring in subtropical plateaus areas, the lower montane evergreen broad-leaved forest (LMEB) in tropical lower montane, and the upper montane evergreen broad-leaved forest (UMEB) in subtropical upper montane regions. Floristic compositions of these evergreen broad-leaved forests are studied, and their diversification and divergence are revealed. I found similarities across the three forest types with species-rich families tending to have cosmopolitan distributions and families with less species exhibiting other distribution types. In biogeographical elements, the SWEB and the UMEB showed similar affinity in the proportion of tropical elements comprising total genera, specifically 45% and 44% respectively, and temperate elements totaling 46% and 48%, of all genera with northern temperate distribution comprising the highest ratio (18% in the SWEB and 20% in the UMEB). LMEB tropical elements comprised 79% of the total genera, with tropical Asian distributed elements contributing the highest ratio (27%). While the three forest floras comprised of similar families, the same is not true at the genus and species levels. I suggest our results indicate divergence of the three forest floras, possibly from events in the geological history of Yunnan From recent palaeobotanical studies, the diversification of floras of these evergreen broad-leaved forests in Yunnan occurred during the late Miocene with increased divergence with time in response not only to altitude changes and at the same time global cooling in Yunnan, but also the southeastward extrusion of Indochina geoblock influencing LMEB, and the Himalayan uplift affecting the floras of SWEB and UMEB. |
学科主题 | Plant Sciences |
语种 | 英语 |
WOS记录号 | WOS:000459025400001 |
内容类型 | 期刊论文 |
源URL | [http://ir.xtbg.org.cn/handle/353005/11195] |
专题 | 西双版纳热带植物园_支撑系统 |
作者单位 | Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu, Hua. Floristic divergence of the evergreen broad-leaved forests in Yunnan, southwestern China[J]. PHYTOTAXA,2019,393(1):1-20. |
APA | Zhu, Hua.(2019).Floristic divergence of the evergreen broad-leaved forests in Yunnan, southwestern China.PHYTOTAXA,393(1),1-20. |
MLA | Zhu, Hua."Floristic divergence of the evergreen broad-leaved forests in Yunnan, southwestern China".PHYTOTAXA 393.1(2019):1-20. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论