干旱区生态环境知识资源中心(Arid): Variation of summer monsoon intensity in the North China Plain and its response to abrupt climatic events during the early-middle Holocene

Arid

DOI	10.1016/j.quaint.2020.03.033
	Variation of summer monsoon intensity in the North China Plain and its response to abrupt climatic events during the early-middle Holocene
	Li, Chenzhi; Li, Bing; Li, Yuecong; Chen, Bishan; Xu, Qinghai; Zhang, Wensheng; Liu, Wei; Ding, Guoqiang
通讯作者	Li, B ; Li, YC
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2020
卷号	550 页码:66-73
英文摘要	Ningjinpo paleolake was the largest lake in the North China Plain during the Holocene, and its continuous sedimentary record has the potential to reconstruct the summer monsoon intensity and determine the limnological response to abrupt climatic events at a high resolution. Here we use AMS C-14 dating and analyses of grain-size and major element contents, and the results show that: (1) During 11.5-10.0 cal kyr BP, the geochemical climate change index (C) (1.16), sediment accumulation rate (SAR) (0.007 cm/yr) and median particle diameter (Md) (20.6 mu m) are the lowest within the section, while the geochemical drought index (0.0323), Fe/Mn ratio (0.0088) and clay content (17.3%) are the highest, which indicate that the North China Plain received less precipitation, and chemical weathering and erosional intensity in the Ningjinpo paleolake catchment were weak. (2) During 10.0-7.7 cal kyr BP, the C index (1.36), content of sand (19.1%) and silt (68.0%), Md (27.2 mu m) and SAR (0.019 cm/yr) increase significantly. These characteristics indicate that the climate gradually became wetter, chemical weathering and erosion intensity increased, and there was increased runoff to the lake, which raised the lake level. (3) During 7.7-5.5 cal kyr BP, the C index (1.56), silt content (71.8%) and SAR (0.030 cm/yr) increase to the highest, while the Fe/Mn ratio (0.0068), sand content (14.4%) and Md (21.4 mu m) decrease to their lowest levels. These suggest the climate was warm and humid, the runoff to the lake was large, chemical weathering in the catchment was strong, and the water level of the lake reached the maximum for the Holocene. (4) During 5.5-3.3 cal kyr BP, the C index (1.26) and SAR (0.011 cm/yr) decrease substantially, whereas the sand content (28.2%) and M-d (18.3 mu m) increase to the highest levels. These characteristics demonstrate that the climate gradually became arid, the runoff to Ningjinpo paleolake was reduced, the intensity of chemical weathering and erosion in the catchment weakened, and the lake level decreased, although the high frequency of floods in this period. (5) In addition to the globally-recorded abrupt climatic events at similar to 8.2 cal kyr BP, similar to 5.3 cal kyr BP and similar to 4.2 cal kyr BP, which were recorded in the northern monsoon region of China, an abrupt climatic event in the middle Holocene, at similar to 7.2 cal kyr BP, was also recorded. In the northern monsoon region of China, these events may have been amplified by unusually active ENSO since the middle Holocene.
英文关键词	Early-middle Holocene East Asian summer monsoon intensity Abrupt climatic events Lake evolution North China Plain
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000555091700006
WOS关键词	POLLEN RECORD ; ENVIRONMENTAL-CHANGE ; LAKE ; VARIABILITY ; VEGETATION ; RIVER ; PRECIPITATION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325372
作者单位	[Li, Chenzhi; Li, Bing; Li, Yuecong; Xu, Qinghai; Zhang, Wensheng; Liu, Wei; Ding, Guoqiang] Hebei Normal Univ, Sch Resources & Environm Sci, Shijiazhuang 050024, Hebei, Peoples R China; [Li, Chenzhi; Li, Bing; Li, Yuecong; Xu, Qinghai; Zhang, Wensheng; Liu, Wei; Ding, Guoqiang] Key Lab Environm Change & Ecol Dev Hebei Prov, Shijiazhuang 050024, Hebei, Peoples R China; [Chen, Bishan] Lingnan Normal Univ, Dept Geog, Zhanjiang 524048, Peoples R China; [Xu, Qinghai] Hebei Normal Univ, Inst Nihewan Archeol Res, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Li, Chenzhi,Li, Bing,Li, Yuecong,et al. Variation of summer monsoon intensity in the North China Plain and its response to abrupt climatic events during the early-middle Holocene[J],2020,550:66-73.
APA	Li, Chenzhi.,Li, Bing.,Li, Yuecong.,Chen, Bishan.,Xu, Qinghai.,...&Ding, Guoqiang.(2020).Variation of summer monsoon intensity in the North China Plain and its response to abrupt climatic events during the early-middle Holocene.QUATERNARY INTERNATIONAL,550,66-73.
MLA	Li, Chenzhi,et al."Variation of summer monsoon intensity in the North China Plain and its response to abrupt climatic events during the early-middle Holocene".QUATERNARY INTERNATIONAL 550(2020):66-73.