干旱区生态环境知识资源中心(Arid): The 4.2 kaBP Event in northeastern China: a geospatial perspective

Arid

DOI	10.5194/cp-15-367-2019
	The 4.2 kaBP Event in northeastern China: a geospatial perspective
	Scuderi, Louis A.1; Yang, Xiaoping 2; Ascoli, Samantha E.1; Li, Hongwei 2
通讯作者	Scuderi, Louis A.
来源期刊	CLIMATE OF THE PAST
ISSN	1814-9324
EISSN	1814-9332
出版年	2019
卷号	15 期号:1 页码:367-375
英文摘要	The Hunshandake Sandy Lands of northeastern China, currently a semiarid lightly vegetated region, were characterized by perennial lakes and forest stands in the early and middle Holocene. Well-developed dark grassland-type paleosols (mollisols) at the southern edge of the Hunshandake - OSL (optically stimulated luminescence)-dated to between 6.93 +/- 0.61 and 4.27 +/- 0.38 ka along with lacustrine sands at higher elevations that date to between 5.7 +/- 03.3 and 5.2 +/- 0.2 ka - and thick gray lacustrine sediments suggest a wetter climate. Between 4.2 and 3.8 ka, the region experienced extreme drying that was exacerbated by lake overflow drainage and sapping that depleted the groundwater table. The region supported a robust population, the Hongshan Culture, but was depopulated post 4.2 ka with migration likely to the Yellow River Valley where the Hongshan introduced their characteristic cultural elements to early Chinese civilization. Evidence for extreme and sudden environmental change in northeastern China, at and following the 4.2 ka BP Event and like that we document in the Hunshandake, is widespread. However, no comprehensive overview of this climatic episode exists. Here, we discuss the relevant events in northeastern China and capture them in a spatially explicit Geographic Information Systems database that can be used to analyze the timing and spatial pattern of climate and environmental change associated with the 4.2 ka BP Event. This approach could serve as a prototype for a global 4.2 ka BP Event database.
类型	Article
语种	英语
国家	USA ; Peoples R China
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000459319300001
WOS关键词	INNER-MONGOLIA ; ENVIRONMENTAL-CHANGES ; DAIHAI LAKE ; HOLOCENE ; CLIMATE ; BP ; DESERTIFICATION ; TRANSITION ; LAND
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214917
作者单位	1.Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA; 2.Zhejiang Univ, Sch Earth Sci, Hangzhou, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Scuderi, Louis A.,Yang, Xiaoping,Ascoli, Samantha E.,et al. The 4.2 kaBP Event in northeastern China: a geospatial perspective[J],2019,15(1):367-375.
APA	Scuderi, Louis A.,Yang, Xiaoping,Ascoli, Samantha E.,&Li, Hongwei.(2019).The 4.2 kaBP Event in northeastern China: a geospatial perspective.CLIMATE OF THE PAST,15(1),367-375.
MLA	Scuderi, Louis A.,et al."The 4.2 kaBP Event in northeastern China: a geospatial perspective".CLIMATE OF THE PAST 15.1(2019):367-375.