The two-step monsoon changes of the last deglaciation recorded in tropical Maar Lake Huguangyan, southern China

2000 ◽  
Vol 45 (16) ◽  
pp. 1529-1532 ◽  
Author(s):  
Wenyuan Wang ◽  
Jiaqi Liu ◽  
Dongsheng Liu ◽  
Tungsheng Liu ◽  
Ping’an Peng ◽  
...  
Keyword(s):  
Southern China ◽  
Last Deglaciation ◽  
Maar Lake ◽  
The Last Deglaciation

scholarly journals Major Forest Changes in Subtropical China since the Last Ice Age

Forests ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1314
Author(s):  
Qiuchi Wan ◽  
Xiao Zhang ◽  
Yaze Zhang ◽  
Yuanfu Yue ◽  
Kangyou Huang ◽  
...  
Keyword(s):  
Forest Ecosystems ◽  
Model Simulation ◽  
Southern China ◽  
Ice Age ◽  
Evergreen Forest ◽  
Pollen Record ◽  
Seasonal Temperature ◽  
Last Deglaciation ◽  
Subtropical Zone ◽  
The Last Deglaciation

In the subtropical zone of southern China, there was a considerable conversion of forests from deciduous to evergreen broadleaf in the early Holocene. However, the exact timing of this vegetation change and its relationship to climate are still unclear. We examined a high-resolution pollen record collected in the mid-subtropical zone and then performed a correlation with regional data to reconstruct the history of forest ecosystems since the last deglaciation. Our data show that the expansion of the evergreen plant component already occurred at low elevations during the last deglaciation. The subtropical mountain landscape was not recolonized by evergreen forests until the mid-Holocene at about 8.1 ka BP. Based on fossil pollen reconstruction and climate model simulation, we conclude that the primary increase in evergreen components of subtropical ecosystems was triggered by postglacial temperature increase, and that a complete conversion from deciduous to evergreen forest ecosystems did not occur until Holocene winter temperatures and seasonal temperature contrast reached a threshold suitable for the growth and persistence of evergreen tree species.

n-alkanol ratios as proxies of paleovegetation and paleoclimate in a peat-lacustrine core in southern China since the last deglaciation

2009 ◽  
Vol 3 (4) ◽  
pp. 445-451 ◽  
Author(s):  
Yanhong Zheng ◽  
Shucheng Xie ◽  
Xiaomin Liu ◽  
Weijian Zhou ◽  
Philip A. Meyers
Keyword(s):  
Southern China ◽  
Last Deglaciation ◽  
The Last Deglaciation

Long-chain alkenone-inferred temperatures from the last deglaciation to the early Holocene recorded by annually laminated sediments of the maar lake Sihailongwan, northeastern China

The Holocene ◽  
2018 ◽  
Vol 28 (7) ◽  
pp. 1173-1180 ◽  
Author(s):  
Qing Sun ◽  
Guoqiang Chu ◽  
Manman Xie ◽  
Yuan Ling ◽  
Youliang Su ◽  
...  
Keyword(s):  
Temperature Increase ◽  
Growing Season ◽  
Northeastern China ◽  
Early Holocene ◽  
Laminated Sediments ◽  
Last Deglaciation ◽  
Temperature Changes ◽  
Maar Lake ◽  
The Last Deglaciation ◽  
Annually Laminated Sediments

Abrupt temperature changes during the last deglaciation are well recognized in Greenland ice cores and in deep-sea sediment records. On the continent of monsoonal Asia, however, only a few terrestrial temperature reconstructions extend to the Younger Dryas (YD). This hampers the understanding of how the Asian monsoon system responded to large-scale boundary changes in ice-sheet dynamics and reorganizations of atmospheric–oceanic circulation between the last deglaciation and the Holocene. Here, we report an alkenone-inferred temperature record from varved sediments of the maar lake Sihailongwan, northeastern China. Alkenone provides temperatures that represent the water temperature during the growing season when the lake is ice-free. Annually laminated sediments provide a reliable time control. Reconstructed temperatures reveal a distinctive pattern of variations during the last deglaciation: a temperature increase of 6°C at the onset of the Bølling–Allerød, two cold intervals (during the Older Dryas and the intra-Allerød cold period), a relatively minor temperature decrease of 1–3°C during the YD, and a rapid temperature increase of 4–5°C at the early Holocene. The reconstructed temperature records from Lake Sihailongwan and adjacent regions indicate that summer (or growing season) temperature changes were smaller than is evident in Greenland ice core records that are weighted toward winter.

Black Sea paleosalinity evolution since the last deglaciation reconstructed from alkenone-inferred Isochrysidales diversity

2021 ◽  
Vol 564 ◽  
pp. 116881
Author(s):  
Yongsong Huang ◽  
Yinsui Zheng ◽  
Patrick Heng ◽  
Liviu Giosan ◽  
Marco J.L. Coolen
Keyword(s):  
Black Sea ◽  
Last Deglaciation ◽  
The Last Deglaciation
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