气候变化领域集成服务门户(CCPortal): Early Eocene southern China dominated by desert: Evidence from a palynological record of the Hengyang Basin, Hunan Province

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DOI	10.1016/j.gloplacha.2020.103320
	Early Eocene southern China dominated by desert: Evidence from a palynological record of the Hengyang Basin, Hunan Province
	Xie, Yulong; Wu, Fuli; Fang, Xiaomin; Zhang, Dawen; Zhang, Weilin
通讯作者	Wu, FL ; Fang, XM (通讯作者)
发表日期	2020
ISSN	0921-8181
EISSN	1872-6364
卷号	195
英文摘要	The India-Asia collision and subsequent uplift of the Tibetan Plateau during the Cenozoic were the main drivers of Asian monsoon development and evolution. However, the climate and possible existence of a desert landscape in southern China prior to the significant uplift of the Tibetan Plateau remain uncertain, because of a lack of reliable proxies or direct geological evidence. The well-preserved early Eocene palynomorphs recovered from the Hengyang Basin, southern China, provide an ideal opportunity to address this problem. The palynological record suggests that the Hengyang Basin was dominated by xerophytic shrubs and an open forest vegetation landscape, confirming that a typical arid desert environment prevailed in the Hengyang Basin during the early Eocene. The high proportion of thermophilic and xerophytic taxa implies a hot and arid climate. The estimated mean annual precipitation (< 230 mm) of the early Eocene in the Hengyang Basin was significantly lower than that of present (1354 mm). We propose that, prior to the significant uplift of the Tibetan Plateau, the combined effects of a strong subtropical anticyclone associated with the extremely warm climate and a rain-shadow effect caused by coastal mountains, were the primary factors responsible for the extreme arid climate and desert-like landscape of inland southern China during the early Eocene.
关键词	LAND-SEA DISTRIBUTION ASIAN MONSOON TIBETAN PLATEAU MODERN POLLEN TARIM BASIN CLIMATE NORTHERN RECONSTRUCTION PALEOCLIMATE VEGETATION
英文关键词	Early Eocene; Desert; Hengyang Basin; Southern China; Palynological record
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000592359700005
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259818
推荐引用方式 GB/T 7714	Xie, Yulong,Wu, Fuli,Fang, Xiaomin,et al. Early Eocene southern China dominated by desert: Evidence from a palynological record of the Hengyang Basin, Hunan Province[J]. 中国科学院青藏高原研究所,2020,195.
APA	Xie, Yulong,Wu, Fuli,Fang, Xiaomin,Zhang, Dawen,&Zhang, Weilin.(2020).Early Eocene southern China dominated by desert: Evidence from a palynological record of the Hengyang Basin, Hunan Province.GLOBAL AND PLANETARY CHANGE,195.
MLA	Xie, Yulong,et al."Early Eocene southern China dominated by desert: Evidence from a palynological record of the Hengyang Basin, Hunan Province".GLOBAL AND PLANETARY CHANGE 195(2020).