Cenozoic plant diversity of Yunnan: A review.

	Cenozoic plant diversity of Yunnan: A review.
	Huang, Yongjiang; Jia, Linbo; Wang, Qiong; Mosbrugger, Volker; Utescher, Torsten; Su, Tao; Zhou, Zhekun
	2016
发表期刊	Plant diversity
ISSN	2468-2659
卷号	38 期号:6 页码:271-282
摘要	Yunnan in southwestern China is renowned for its high plant diversity. To understand how this modern botanical richness formed, it is critical to investigate the past biodiversity throughout the geological time. In this review, we present a summary on plant diversity, floristics and climates in the Cenozoic of Yunnan and document their changes, by compiling published palaeobotanical sources. Our review demonstrates that thus far a total of 386 fossil species of ferns, gymnosperms and angiosperms belonging to 170 genera within 66 families have been reported from the Cenozoic, particularly the Neogene, of Yunnan. Angiosperms display the highest richness represented by 353 species grouped into 155 genera within 60 families, with Fagaceae, Fabaceae, Lauraceae and Juglandaceae being the most diversified. Most of the families and genera recorded as fossils still occur in Yunnan, but seven genera have disappeared, including Berryophyllum, Cedrelospermum, Cedrus, Palaeocarya, Podocarpium, Sequoia and Wataria. The regional extinction of these genera is commonly referred to an aridification of the dry season associated with Asian monsoon development. Floristic analyses indicate that in the late Miocene, Yunnan had three floristic regions: a northern subtropical floristic region in the northeast, a subtropical floristic region in the east, and a tropical floristic region in the southwest. In the late Pliocene, Yunnan saw two kinds of floristic regions: a subalpine floristic region in the northwest, and two subtropical floristic regions separately in the southwest and the eastern center. These floristic concepts are verified by results from our areal type analyses which suggest that in the Miocene southwestern Yunnan supported the most Pantropic elements, while in the Pliocene southwestern Yunnan had abundant Tropical Asia (Indo-Malaysia) type and East Asia and North America disjunct type that were absent from northwestern Yunnan. From the late Miocene to late Pliocene through to the present, floristic composition and vegetation types changed markedly, presumably in response to altitude changes and coeval global cooling. An integration of palaeoclimate data suggests that during the Neogene Yunnan was warmer and wetter than today. Moreover, northern Yunnan witnessed a pronounced temperature decline, while southern Yunnan experienced only moderate temperature changes. Summer precipitation was consistently higher than winter precipitation, suggesting a rainfall seasonality. This summary on palaeoclimates helps us to understand under what conditions plant diversity occurred and evolved in Yunnan throughout the Cenozoic.
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/64864
专题	植物化学与西部植物资源持续利用国家重点实验室
推荐引用方式 GB/T 7714	Huang, Yongjiang,Jia, Linbo,Wang, Qiong,et al. Cenozoic plant diversity of Yunnan: A review.[J]. Plant diversity,2016,38(6):271-282.
APA	Huang, Yongjiang.,Jia, Linbo.,Wang, Qiong.,Mosbrugger, Volker.,Utescher, Torsten.,...&Zhou, Zhekun.(2016).Cenozoic plant diversity of Yunnan: A review..Plant diversity,38(6),271-282.
MLA	Huang, Yongjiang,et al."Cenozoic plant diversity of Yunnan: A review.".Plant diversity 38.6(2016):271-282.