DOI: 10.5194/cp-15-367-2019
Scopus记录号: 2-s2.0-85062094777
论文题名: The 4.2 ka BP Event in northeastern China: A geospatial perspective
作者: Scuderi L.A. ; Yang X. ; Ascoli S.E. ; Li H.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2019
卷: 15, 期: 1 起始页码: 367
结束页码: 375
语种: 英语
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±0.3< 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. © 2019 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122238
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, United States; School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang Province, China
Recommended Citation:
Scuderi L.A.,Yang X.,Ascoli S.E.,et al. The 4.2 ka BP Event in northeastern China: A geospatial perspective[J]. Climate of the Past,2019-01-01,15(1)