气候变化领域集成服务门户(CCPortal): OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau

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DOI	10.1177/0959683620908643
	OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau
	Ling, Zhiyong; Yang, Xiaoyan; Wang, Yixuan; Wang, Yanren; Jin, Jianhui; Zhang, Dongju; Chen, Fahu
通讯作者	Ling, ZY (通讯作者)
发表日期	2020
ISSN	0959-6836
EISSN	1477-0911
起始页码	1043
结束页码	1052
卷号	30 期号:7
英文摘要	Recent environmental archeological evidence has started to throw light on both the timing and processes of human colonization of the Tibetan Plateau (TP). Yarlung Tsangpo (YT) valley, a very important region of the southern TP for occupation, is home to not only modern Tibetans but also their ancestors. However, a lack of suitable sedimentary strata has limited the establishment of a secure chronology. Here, we report on a new stratigraphic section with prehistoric pottery and cultural layers that was discovered on a terrace of the YT at Liena, in Nyingchi County. The cultural layers are overlain by, and bedded within, eolian and lacustrine sediments. We used the quartz Optically Stimulated Luminescence (OSL) method to date 11 samples and performed geochemical analysis on 100 samples to derive paleoenvironmental indicators. The OSL analysis gave an age of 4.3 ka BP for the cultural layer, which makes it the earliest human activity in the YT valley of Nyingchi to date. In addition, commencement of eolian deposition was dated to at least 8.3 ka, coinciding with the Holocene warm period. We discuss possible causal factors for human occupation in the valley and show that climatic changes played a crucial role in prehistoric human migration c. 8.3-4.3 ka BP. Before the early Holocene, most of the river terraces in the valley were being actively reworked by rivers or covered by lakes. So there were no suitable places for occupation by ancient populations. With the recession of dammed lakes during the Holocene warm period, the relatively flat and wide valley terraces, blanketed with rich eolian deposits (such as sandy loess), provided an attractive place for ancient people engaged in nomadic and even agricultural activities. Hence, the climate conditions of the Holocene warm period drove the environmental changes that provided favorable conditions for ancient human activities.
关键词	PERMANENT HUMAN OCCUPATION LUMINESCENCE AGRICULTURE MIGRATION HISTORY REGION CHINA AGE
英文关键词	ancient human activities; Nyingchi archeological site; OSL chronology; paleoenvironment; Yarlung Tsangpo
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000523887600001
来源期刊	HOLOCENE
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/259872
推荐引用方式 GB/T 7714	Ling, Zhiyong,Yang, Xiaoyan,Wang, Yixuan,et al. OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,30(7).
APA	Ling, Zhiyong.,Yang, Xiaoyan.,Wang, Yixuan.,Wang, Yanren.,Jin, Jianhui.,...&Chen, Fahu.(2020).OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau.HOLOCENE,30(7).
MLA	Ling, Zhiyong,et al."OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau".HOLOCENE 30.7(2020).