Rapid environmental changes in the Lake Qinghai basin during the late Holocene
The Lake Qinghai Basin is sensitive to global and regional climate change because of its unique geographical location. It is the hotspot for paleoclimate research in East Asia. In this study, we reconstructed the environmental evolution of the Lake Qinghai since ∼9 ka by using a high-resolution peat...
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Online Access: | http://dx.doi.org/10.3389/feart.2023.1125302 https://www.frontiersin.org/articles/10.3389/feart.2023.1125302/full |
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crfrontiers:10.3389/feart.2023.1125302 2024-02-11T10:06:28+01:00 Rapid environmental changes in the Lake Qinghai basin during the late Holocene Wang, Chen Qiu, Yahui Fan, Fenglei Li, Baosheng Niu, Dongfeng Shu, Peixian National Natural Science Foundation of China 2023 http://dx.doi.org/10.3389/feart.2023.1125302 https://www.frontiersin.org/articles/10.3389/feart.2023.1125302/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 11 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2023 crfrontiers https://doi.org/10.3389/feart.2023.1125302 2024-01-26T10:03:55Z The Lake Qinghai Basin is sensitive to global and regional climate change because of its unique geographical location. It is the hotspot for paleoclimate research in East Asia. In this study, we reconstructed the environmental evolution of the Lake Qinghai since ∼9 ka by using a high-resolution peat and fluvial-lacustrine record (Laoyinggou profile) obtained at the foot of Nanshan Mountain. Based on 8 AMS 14 C dates and lithology, loss on ignition (LOI), total organic matter (TOC), X-ray fluorescence (XRF) core-scanning measurements, ratio of total organic carbon to nitrogen (TOC/TN), and sediment particle sorting coefficients, we show that during the Middle Holocene (∼9–4.4 ka BP) this region was primarily dominated by the Asian summer monsoon, with a consistent, warm, and humid environment. By contrast, during the late Holocene (4.4 ka to present), the climatic context in this area fluctuated dramatically at the millennial scales. The low TOC content, lower TOC/TN ration and strong hydroclimatic indicate six rapid climate change events, which occurred at ∼4.0 ka, ∼3.6 ka, ∼3.2 ka, ∼2.8 ka, ∼2.1 ka, and ∼1.4 ka, all of which coincided to cold episodes in the North Atlantic Ocean. Article in Journal/Newspaper North Atlantic Frontiers (Publisher) Frontiers in Earth Science 11 |
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General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Wang, Chen Qiu, Yahui Fan, Fenglei Li, Baosheng Niu, Dongfeng Shu, Peixian Rapid environmental changes in the Lake Qinghai basin during the late Holocene |
topic_facet |
General Earth and Planetary Sciences |
description |
The Lake Qinghai Basin is sensitive to global and regional climate change because of its unique geographical location. It is the hotspot for paleoclimate research in East Asia. In this study, we reconstructed the environmental evolution of the Lake Qinghai since ∼9 ka by using a high-resolution peat and fluvial-lacustrine record (Laoyinggou profile) obtained at the foot of Nanshan Mountain. Based on 8 AMS 14 C dates and lithology, loss on ignition (LOI), total organic matter (TOC), X-ray fluorescence (XRF) core-scanning measurements, ratio of total organic carbon to nitrogen (TOC/TN), and sediment particle sorting coefficients, we show that during the Middle Holocene (∼9–4.4 ka BP) this region was primarily dominated by the Asian summer monsoon, with a consistent, warm, and humid environment. By contrast, during the late Holocene (4.4 ka to present), the climatic context in this area fluctuated dramatically at the millennial scales. The low TOC content, lower TOC/TN ration and strong hydroclimatic indicate six rapid climate change events, which occurred at ∼4.0 ka, ∼3.6 ka, ∼3.2 ka, ∼2.8 ka, ∼2.1 ka, and ∼1.4 ka, all of which coincided to cold episodes in the North Atlantic Ocean. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Wang, Chen Qiu, Yahui Fan, Fenglei Li, Baosheng Niu, Dongfeng Shu, Peixian |
author_facet |
Wang, Chen Qiu, Yahui Fan, Fenglei Li, Baosheng Niu, Dongfeng Shu, Peixian |
author_sort |
Wang, Chen |
title |
Rapid environmental changes in the Lake Qinghai basin during the late Holocene |
title_short |
Rapid environmental changes in the Lake Qinghai basin during the late Holocene |
title_full |
Rapid environmental changes in the Lake Qinghai basin during the late Holocene |
title_fullStr |
Rapid environmental changes in the Lake Qinghai basin during the late Holocene |
title_full_unstemmed |
Rapid environmental changes in the Lake Qinghai basin during the late Holocene |
title_sort |
rapid environmental changes in the lake qinghai basin during the late holocene |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://dx.doi.org/10.3389/feart.2023.1125302 https://www.frontiersin.org/articles/10.3389/feart.2023.1125302/full |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Frontiers in Earth Science volume 11 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2023.1125302 |
container_title |
Frontiers in Earth Science |
container_volume |
11 |
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1790604204955402240 |