Vegetation dynamics in response to evolution of the Asian Monsoon in a warm world: Pollen evidence from the Weihe Basin, central China

2020 ◽  
Vol 193 ◽  
pp. 103269 ◽  
Author(s):  
Lin Zhao ◽  
Huayu Lu ◽  
Hanlin Wang ◽  
Michael Meadows ◽  
Chunmei Ma ◽  
...  
Keyword(s):  
Vegetation Dynamics ◽  
Asian Monsoon ◽  
Central China ◽  
Weihe Basin

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

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.

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

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.

Facies analysis of the Middle and Late Quaternary sediment infill of the northern Weihe Basin, Central China

2016 ◽  
Vol 31 (2) ◽  
pp. 152-165 ◽  
Author(s):  
Daniël S. Rits ◽  
Maarten A. Prins ◽  
Simon R. Troelstra ◽  
Ronald T. van Balen ◽  
Yan Zheng ◽  
...  
Keyword(s):  
Facies Analysis ◽  
Late Quaternary ◽  
Central China ◽  
Quaternary Sediment ◽  
Weihe Basin

scholarly journals Asian monsoon rainfall variation during the Pliocene forced by global temperature change

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Hanlin Wang ◽  
Huayu Lu ◽  
Lin Zhao ◽  
Hongyan Zhang ◽  
Fang Lei ◽  
...  
Keyword(s):  
Asian Monsoon ◽  
Monsoon Rainfall ◽  
Global Temperature ◽  
Central China ◽  
Mean Annual Precipitation ◽  
The Tibetan Plateau ◽  
Temperature Changes ◽  
Rainfall Variation ◽  
History Of ◽  
Global Temperature Change

AbstractThe Asian monsoon variations under global temperature changes during the Pliocene are still debated. Here we use a sedimentary record of phytoliths (plant silica) from the Weihe Basin, central China, to explore the history of C4 grasses and quantitatively reconstruct the Asian monsoon climate since the late Miocene. Our results show that C4 grasses have been a dominant grassland component since ~11.0 Ma. A subsequent marked decrease in warm- and humid-adapted C4 grasses and an increase in cool- and dry-adapted C3 grasses occurred in the Pliocene, ~4.0 Ma; the phytolith-based quantitative reconstruction of mean annual precipitation marked a decrease from 800~1673 mm to 443~900 mm, indicating a reduction in Asian monsoon rainfall in the Pliocene. Our newly obtained records conflict with the hypothesis that the growth of the Tibetan Plateau strengthened the Asian monsoon rainfall. Nevertheless, they emphasize the importance of global temperature as a determinant of Pliocene Asian monsoon variations.

Holocene vegetation variation in the Daihai Lake region of north-central China: a direct indication of the Asian monsoon climatic history

2004 ◽  
Vol 23 (14-15) ◽  
pp. 1669-1679 ◽  
Author(s):  
Jule Xiao ◽  
Qinghai Xu ◽  
Toshio Nakamura ◽  
Xiaolan Yang ◽  
Wendong Liang ◽  
...  
Keyword(s):  
Asian Monsoon ◽  
Central China ◽  
North Central ◽  
Daihai Lake ◽  
Lake Region ◽  
Direct Indication ◽  
Climatic History ◽  
Vegetation Variation
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