Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau

Aeolian sediments hold key information on aeolian history and past environmental changes. Aeolian desertification and extensive land degradation have seriously affected the eco-environment in the Gannan region on the eastern Tibetan Plateau. Understanding the history of aeolian activities can deepen...

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Main Authors: Shengli Yang, Xiaojing Liu, Ting Cheng, Yuanlong Luo, Qiong Li, Li Liu, Zixuan Chen
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-09-01
Series:Frontiers in Earth Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/feart.2021.686677/full
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author Shengli Yang
Xiaojing Liu
Ting Cheng
Yuanlong Luo
Qiong Li
Li Liu
Zixuan Chen
author_facet Shengli Yang
Xiaojing Liu
Ting Cheng
Yuanlong Luo
Qiong Li
Li Liu
Zixuan Chen
author_sort Shengli Yang
collection DOAJ
description Aeolian sediments hold key information on aeolian history and past environmental changes. Aeolian desertification and extensive land degradation have seriously affected the eco-environment in the Gannan region on the eastern Tibetan Plateau. Understanding the history of aeolian activities can deepen our understanding of the impacts of climatic changes on aeolian activities in the future. This study uses a detailed chronology and multiple proxy analyses of a typical aeolian section in Maqu to reconstruct aeolian activities in the region during the Holocene. Our results showed that aeolian activities have occurred in the eastern Tibetan Plateau since the early Holocene. Magnetic susceptibility, grain size records, and paleosols formation indicated a trend of stepwise weakening in aeolian activities from the early Holocene to the present. The weakening of aeolian activities was divided into three stages: ∼10.0–8.0 ka BP, ∼8.0–4.0 ka BP, and ∼4.0 ka BP to the present. Paleosols were primarily formed after ∼8.0 ka BP, and episodically interrupted aeolian activities processes in the Gannan region. Aeolian activity may increase in the Gannan region as the climate gradually warms. Climatic changes and local hydrological conditions have jointly affected the history of aeolian activities in this region.
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spelling doaj.art-5704b7e9486441858c44735925ff66b42022-12-21T18:35:00ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632021-09-01910.3389/feart.2021.686677686677Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan PlateauShengli YangXiaojing LiuTing ChengYuanlong LuoQiong LiLi LiuZixuan ChenAeolian sediments hold key information on aeolian history and past environmental changes. Aeolian desertification and extensive land degradation have seriously affected the eco-environment in the Gannan region on the eastern Tibetan Plateau. Understanding the history of aeolian activities can deepen our understanding of the impacts of climatic changes on aeolian activities in the future. This study uses a detailed chronology and multiple proxy analyses of a typical aeolian section in Maqu to reconstruct aeolian activities in the region during the Holocene. Our results showed that aeolian activities have occurred in the eastern Tibetan Plateau since the early Holocene. Magnetic susceptibility, grain size records, and paleosols formation indicated a trend of stepwise weakening in aeolian activities from the early Holocene to the present. The weakening of aeolian activities was divided into three stages: ∼10.0–8.0 ka BP, ∼8.0–4.0 ka BP, and ∼4.0 ka BP to the present. Paleosols were primarily formed after ∼8.0 ka BP, and episodically interrupted aeolian activities processes in the Gannan region. Aeolian activity may increase in the Gannan region as the climate gradually warms. Climatic changes and local hydrological conditions have jointly affected the history of aeolian activities in this region.https://www.frontiersin.org/articles/10.3389/feart.2021.686677/fullloesssandaeolian activitiesclimate changeHolocence
spellingShingle Shengli Yang
Xiaojing Liu
Ting Cheng
Yuanlong Luo
Qiong Li
Li Liu
Zixuan Chen
Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau
Frontiers in Earth Science
loess
sand
aeolian activities
climate change
Holocence
title Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau
title_full Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau
title_fullStr Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau
title_full_unstemmed Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau
title_short Stepwise Weakening of Aeolian Activities During the Holocene in the Gannan Region, Eastern Tibetan Plateau
title_sort stepwise weakening of aeolian activities during the holocene in the gannan region eastern tibetan plateau
topic loess
sand
aeolian activities
climate change
Holocence
url https://www.frontiersin.org/articles/10.3389/feart.2021.686677/full
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