A high-resolution stalagmite record of the Holocene East Asian monsoon from Mt Shennongjia, central China

We have carried out a multiproxy analysis of high-resolution eutrophic peat/mud, sand dune, and loess/paleosol sequences covering the Holocene period in both southern and northern China, in order to test the hypothesis of a time-transgressive Holocene optimum in the East Asian monsoon area (An et al. 2000). Samples were radiocarbon dated to establish the chronology. Our results indicate that the Holocene optimum occurred between ∼10,000–5000 cal yr ago in both southern and northern China, consistent with a global pattern rather than simply a local expression. Our data also support the conclusion that the evolution of Holocene climate in China is consistent with changes in Northern Hemisphere solar radiation.

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Changes in Paleovegetation and Paleoclimate in China Since the Late Middle Pleistocene: A Case Study of the Dajiuhu Basin

Sustainability ◽

10.3390/su13094848 ◽

2021 ◽

Vol 13 (9) ◽

pp. 4848

Author(s):

Liwei Wu ◽

Xinling Li ◽

Qinghai Xu ◽

Manyue Li ◽

Qiufeng Zheng ◽

...

Keyword(s):

Grain Size ◽

Asian Monsoon ◽

East Asian Monsoon ◽

Asian Summer Monsoon ◽

East Asian ◽

Central China ◽

Middle Pleistocene ◽

Pollen Record ◽

The Difference ◽

Late Middle Pleistocene

The East Asian monsoon system is an important part of global atmospheric circulation; however, records of the East Asian monsoon from different regions exhibit different evolutionary rhythms. Here, we show a high-resolution record of grain size and pollen data from a lacustrine sediment core of Dajiuhu Lake in Shennongjia, Hubei Province, China, in order to reconstruct the paleovegetation and paleoeclimate evolution of the Dajiuhu Basin since the late Middle Pleistocene (~237.9 ka to the present). The results show that grain size and pollen record of the core DJH-2 are consistent with the δ18O record of stalagmites from Sanbao Cave in the same area, which is closely related to the changes of insolation at the precessional (~20-kyr) scale in the Northern Hemisphere. This is different from the records of the Asian summer monsoon recorded in the Loess Plateau of North China, which exhibited dominant 100-kyr change cyclicities. We suggest that the difference between paleoclimatic records from North and South China is closely related to the east–west-oriented mountain ranges of the Qinling Mountains in central China that blocked weakened East Asia summer monsoons across the mountains during glacial periods.

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Supplemental Material: Monthly insolation linked to the time-transgressive nature of the Holocene East Asian monsoon precipitation maximum

10.1130/geol.s.16942777.v1 ◽

2021 ◽

Author(s):

Xin Zhou ◽

et al.

Keyword(s):

Asian Monsoon ◽

East Asian Monsoon ◽

East Asian ◽

Monsoon Precipitation ◽

The Holocene ◽

Precipitation Changes

Supplemental information on the records used, the chronological framework of different sites, reconstructions of precipitation changes, and the defined time of the Holocene monsoon precipitation maximum.<br>

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Diverse manifestations of insolation forcing of environmental changes during the middle Piacenzian

10.5194/egusphere-egu21-1733 ◽

2021 ◽

Author(s):

Peng Gao ◽

Junsheng Nie

Keyword(s):

High Resolution ◽

Asian Monsoon ◽

Environmental Changes ◽

East Asian Monsoon ◽

East Asian ◽

Ice Volume ◽

Global Ice Volume ◽

Direct Forcing ◽

Insolation Forcing ◽

Higher Sensitivity

<p>The middle Piacenzian period is the closest sustained warm interval and a possible analog to the future climate. It is well known that global ice volume exhibits dominant 41-kyr cyclicities. However, high resolution terrestrial paleoenvironmental records are scare. Here we present a 3.6 kyr terrestrial environmental variation record from Teruel Basin of Spain and compare the results with the East Asian monsoon records. The Spain results show dominant 41-kyr cycles during the early Piacenzian (3.3-3.15 Ma) when eccentricity was at minimum, but the 41-kyr cycles weakens during the late Piacenzian 3.15-2.95 Ma when eccentricity got increased, suggesting direct forcing by insolation. This pattern is different from the monsoonal records from China, which demonstrates persistent 20-kyr cycles during the entire middle Piacenzian. The strong 41-kyr cycles in westerly region during the early Piacenzian may originate from its higher latitude and higher sensitivity to insolation gradient forcing.</p>

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Combined high- and low-latitude forcing of East Asian monsoon precipitation variability in the Pliocene warm period

Science Advances ◽

10.1126/sciadv.abc2414 ◽

2020 ◽

Vol 6 (46) ◽

pp. eabc2414

Author(s):

Yichao Wang ◽

Huayu Lu ◽

Kexin Wang ◽

Yao Wang ◽

Yongxiang Li ◽

...

Keyword(s):

Asian Monsoon ◽

East Asian Monsoon ◽

East Asian ◽

Central China ◽

Critical Threshold ◽

Monsoon Precipitation ◽

Low Latitude ◽

Monsoon Variability ◽

Precipitation Record ◽

Response To Temperature

East Asian monsoon variability in the Pliocene warm world has not been sufficiently studied because of the lack of direct records. We present a high-resolution precipitation record from Pliocene fluvial-lacustrine sequences in the Weihe Basin, Central China, a region sensitive to the East Asian monsoon. The record shows an abrupt monsoon shift at ~4.2 million years ago, interpreted as the result of high-latitude cooling, with an extratropical temperature decrease across a critical threshold. The precipitation time series exhibits a pronounced ~100–thousand year periodicity and the presence of precession and half-precession cycles, which suggest low-latitude forcing. The synchronous phase but mismatched amplitudes of the East Asian monsoon precipitation proxy and eccentricity suggest a nonlinear but sensitive precipitation response to temperature forcing in the Pliocene warm world. These observations highlight the role of high- and low-latitude forcing of East Asian monsoon variations on tectonic and orbital time scales.

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Multiple analysis of variation of the East Asian Monsoon during the Holocene

Quaternary International ◽

10.1016/j.quaint.2009.02.017 ◽

2010 ◽

Vol 213 (1-2) ◽

pp. 74-78 ◽

Cited By ~ 4

Author(s):

Huiyu Liu ◽

Zhenshan Lin ◽

Xiangzhen Qi ◽

Mingyang Zhang ◽

Zhenzhen Zhang ◽

...

Keyword(s):

Asian Monsoon ◽

East Asian Monsoon ◽

East Asian ◽

The Holocene ◽

Analysis Of Variation ◽

Multiple Analysis

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Holocene climate variations from Zhuyeze terminal lake records in East Asian monsoon margin in arid northern China

Quaternary Research ◽

10.1016/j.yqres.2010.03.009 ◽

2010 ◽

Vol 74 (1) ◽

pp. 46-56 ◽

Cited By ~ 85

Author(s):

Hao Long ◽

ZhongPing Lai ◽

NaiAng Wang ◽

Yu Li

Keyword(s):

Late Holocene ◽

Asian Monsoon ◽

East Asian Monsoon ◽

East Asian ◽

Northern China ◽

Optically Stimulated Luminescence ◽

Early Holocene ◽

Climate Variations ◽

The Holocene ◽

Geomorphic Features

AbstractZhuyeze palaeolake is a terminal lake situated in the arid northern China in the East Asian monsoon margin. In order to examine the Holocene palaeoclimatic change in the East Asian monsoon margin, Qingtu Lake section (QTL) from Zhuyeze palaeolake is sampled in high resolution. Palaeoclimatic proxies such as grain size, carbonate, TOC, C/N and δ13C of organic matter, were analyzed; eleven 14C samples and six optically stimulated luminescence (OSL) samples were dated to provide chronological control. We also investigated the geomorphic features of lake shorelines in this area. The results show that the climate was warm and dry in early-Holocene (9.5–7.0 cal ka BP), cool and humid in mid-Holocene (7.0–4.8 cal ka BP), and increasingly drier in late-Holocene (since 4.8 cal ka BP). Comparisons of our records with other records in adjacent areas, as well as with the records in the Asian monsoon areas, suggested that changes in effective moisture was synchronous in East Asian monsoon marginal zone (i.e. the pattern of dry early-Holocene, humid mid-Holocene, and aridity-increasing late-Holocene), and that the moisture optimum during the Holocene was out-of-phase between Asian monsoon margin and Asian monsoonal dominated region, possibly due to the high temperature at that time.

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Reconstruction of climate and vegetation changes of Lake Bayanchagan (Inner Mongolia): Holocene variability of the East Asian monsoon

Quaternary Research ◽

10.1016/j.yqres.2005.10.007 ◽

2006 ◽

Vol 65 (3) ◽

pp. 411-420 ◽

Cited By ~ 163

Author(s):

Wenying Jiang ◽

Zhengtang Guo ◽

Xiangjun Sun ◽

Haibin Wu ◽

Guoqiang Chu ◽

...

Keyword(s):

Inner Mongolia ◽

Climate Changes ◽

Asian Monsoon ◽

East Asian Monsoon ◽

East Asian ◽

Forest Patches ◽

The Holocene ◽

Temperature And Precipitation ◽

Northern Latitudes ◽

Vegetation And Climate

AbstractA high-resolution pollen and Pediastrum record, spanning 12,500 yr, is presented for Lake Bayanchagan , southern Inner Mongolia. Individual pollen taxa (PT-MAT) and the PFT affinity scores (PFT-MAT) were used for quantitative climatic reconstruction from pollen and algal data. Both techniques indicate that a cold and dry climate, similar to that of today, prevailed before 10,500 cal yr B.P. The wettest climate occurred between ∼10,500 and 6500 cal yr B.P., at which time annual precipitation was up to 30–60% higher than today. The early Holocene increases in temperature and precipitation occurred simultaneously, but mid-Holocene cooling started at approximately 8000 cal yr B.P., 1500 yr earlier than the drying. Vegetation reconstruction was based on the objective assignment of pollen taxa to the plant functional type. The results suggest that this region was dominated by steppe vegetation throughout the Holocene, except for the period ∼9200 to ∼6700 cal yr B.P., when forest patches were relatively common. Inner Mongolia is situated at the limit of the present East Asian monsoon and patterns of vegetation and climate changes in that region during the Holocene probably reflect fluctuations in the monsoon's response to solar insolation variations. The early to middle Holocene monsoon undoubtedly extended to more northern latitudes than at present.

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