Arid
DOI10.1007/s40333-014-0064-y
Early Holocene environment at a key location of the northwest boundary of the Asian summer monsoon: a synthesis on chronologies of Zhuye Lake, Northwest China
Li, Yu; Wang, NaiAng; Zhang, ChengQi; Wang, Yue
通讯作者Li, Yu
来源期刊JOURNAL OF ARID LAND
ISSN1674-6767
EISSN2194-7783
出版年2014
卷号6期号:5页码:511-528
英文摘要

The intensified monsoon increases summer rainfall and creates wet conditions in the Asian summer monsoon region during the early Holocene. Along with millennial-scale changes of the monsoon intensity, it is still unclear whether the boundary of the monsoon region changes according to monsoon variability. Investigations into the early Holocene environment in monsoon marginal zones are crucial for understanding the monsoon boundary changes. Zhuye Lake is located at the northwest edge of the Asian summer monsoon, the northern Qilian Mountains, which are less affected by modern summer monsoon water vapor. Previous studies have reached different conclusions regarding the early Holocene climatic and environmental changes based on different dating methods (C-14 and OSL (optically stimulated luminescence)) and materials (shells, carbonate, pollen concentrates and bulk organic carbon). In this study, we synthesized 102 C-14 dates and 35 OSL dates from ten Holocene sedimentary sections and ten paleo-shorelines in the lake basin. A comparison between ages from different dating methods and materials generally shows that carbon reservoir effects are relatively slight in Zhuye Lake while the disordered chronologies are mainly related to the erosion processes and reworking effects. In addition, proxy data, including lithology, pollen, total organic carbon and carbonate, were collected from different sites of Zhuye Lake. According to the new synthesis, the early Holocene environment was relatively humid, associated with high runoff and lake water levels. The result indicates that the monsoon boundary moves to the north during the period of the intensified monsoon. A typical arid-area lake was formed during the mid-Holocene when carbonate accumulation and high organic matter contents were the main features of this period. The lake retreated strongly during the late Holocene, showing a drought trend. Overall, the lake evolution is generally consistent with the Holocene Asian summer monsoon change, showing the monsoon influence to monsoon marginal zones.


英文关键词the early Holocene C-14 dating OSL dating lacustrine sediments Asian summer monsoon monsoon marginal zones
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000336387600001
WOS关键词SHIYANG RIVER DRAINAGE ; TENGGER DESERT ; PALAEOLAKE EVOLUTION ; MOISTURE EVOLUTION ; MILLENNIAL-SCALE ; HIGH-RESOLUTION ; CLIMATE CHANGES ; NORTHERN CHINA ; POLLEN ; RECORD
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构兰州大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/183098
作者单位Lanzhou Univ, Coll Earth & Environm Sci, Ctr Hydrol Cycle & Water Resources Arid Reg, Lanzhou 730000, Peoples R China
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GB/T 7714
Li, Yu,Wang, NaiAng,Zhang, ChengQi,et al. Early Holocene environment at a key location of the northwest boundary of the Asian summer monsoon: a synthesis on chronologies of Zhuye Lake, Northwest China[J]. 兰州大学,2014,6(5):511-528.
APA Li, Yu,Wang, NaiAng,Zhang, ChengQi,&Wang, Yue.(2014).Early Holocene environment at a key location of the northwest boundary of the Asian summer monsoon: a synthesis on chronologies of Zhuye Lake, Northwest China.JOURNAL OF ARID LAND,6(5),511-528.
MLA Li, Yu,et al."Early Holocene environment at a key location of the northwest boundary of the Asian summer monsoon: a synthesis on chronologies of Zhuye Lake, Northwest China".JOURNAL OF ARID LAND 6.5(2014):511-528.
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