East Gobi megalake systems reveal East Asian Monsoon dynamics over the last interglacial-glacial cycle

Li, Hongwei; Yang, Xiaoping; Scuderi, L. A.; Hu, Fangen; Liang, Peng; Jiang, Qida; Buylaert, Jan‐Pieter; Wang, Xulong; Du, Junyi; Kang, Shugang; Ma, Zhiyong; Wang, Lisheng; Wang, Xuefeng

doi:10.1038/s41467-023-37859-1

Cited by 13 publications

(3 citation statements)

References 84 publications

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“…However, this effect during the EECO appears to have been offset by the increased precipitation in this region due to water vapor exchanges over land and sea driven by high temperatures (Quan et al, 2012;Licht et al, 2014). The precipitation in this region includes two components: sourced from the western Pacific and Indian Ocean in summer, and from the westerly belt in winter (Li et al, 2023). Therefore, the difference between dry and wet conditions in winter and summer was not significant, and as a result, the fire frequency throughout the Eocene was less frequent and intense than in modern monsoon rainforest and shrubland.…”

Section: Discussionmentioning

confidence: 99%

Late Paleocene to early Oligocene fire ecology of the south Mongolian highland

Zhou

Wang

et al. 2023

Front. Earth Sci.

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Changes in fire ecology during warm and cold periods in the geological past are important because of their effects on terrestrial ecosystems and the global carbon cycle. We examined the charcoal concentrations of the Erden Obo section in Inner Mongolia to reconstruct the evolution of wildfire and their relationship to the regional vegetation from the Late Paleocene through Early Oligocene. Our data show that fire frequency were relatively high from the end of the Paleocene to the beginning of the Eocene, in accord with other paleofire records worldwide. However, low fire frequency occurred during the Early Eocene Climate Optimum (EECO), coincident with the change in the regional vegetation from shrubland to forest due to the strengthening of the regional rainfall, and we suggest that the humid climate may have been responsible for this decrease. High frequency fire occurred after the Middle Eocene, near-synchronously with the transition of the regional vegetation from forest to steppe. The high-frequency fire was most likely triggered by regional drought during the aridification process after the Middle Eocene. We propose that these temporal changes in the fire ecology were consistent within the northern temperate zone from the Late Paleocene through Early Oligocene, and we suggest that studies of global wildfires need to be evaluated within the context of paleovegetation zones and ecosystem evolution.

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Section: Discussionmentioning

confidence: 99%

Late Paleocene to early Oligocene fire ecology of the south Mongolian highland

Zhou

Wang

et al. 2023

Front. Earth Sci.

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“…RS is widely used in scientific research in many fields, including economics, ecology, transportation, and archeology. Among them, in the field of Earth science, Li et al [5] used RS images and digital elevation models to discover the ancient lake and reconstruct the ancient climate in the Gobi. Dervisoglu [6] investigated the changes in the long-and short-term water surface area in Turkey.…”

Section: Introductionmentioning

confidence: 99%

A Novel and Extensible Remote Sensing Collaboration Platform: Architecture Design and Prototype Implementation

Gao,

Chen,

Chen

et al. 2024

IJGI

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Geospatial data, especially remote sensing (RS) data, are of significant importance for public services and production activities. Expertise is critical in processing raw data, generating geospatial information, and acquiring domain knowledge and other remote sensing applications. However, existing geospatial service platforms are more oriented towards the professional users in the implementation process and final application. Building appropriate geographic applications for non-professionals remains a challenge. In this study, a geospatial data service architecture is designed that links desktop geographic information system (GIS) software and cloud-based platforms to construct an efficient user collaboration platform. Based on the scalability of the platform, four web apps with different themes are developed. Data in the fields of ecology, oceanography, and geology are uploaded to the platform by the users. In this pilot phase, the gap between non-specialized users and experts is successfully bridged, demonstrating the platform’s powerful interactivity and visualization. The paper finally evaluates the capability of building spatial data infrastructures (SDI) based on GeoNode and discusses the current limitations. The support for three-dimensional data, the improvement of metadata creation and management, and the fostering of an open geo-community are the next steps.

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“…However, the paleoclimatic history at the northern margin of the EAM during the Late Pleistocene is poorly documented because of the scarcity of chronologically well-constrained sedimentary records. The arid and semi-arid region of central and eastern Inner Mongolia is located along the present-day northern margin of the East Asian summer monsoon (EASM) and is particularly sensitive to the advance and retreat of the EASM (Li et al, 2023). The Hunshandake Sandy Land (HSL), covering an area of about 52,000 km 2 , is one of the four largest sandy lands in central and eastern Inner Mongolia (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Magnetoclimatological Record of Late Pleistocene Loess in the Southern Hunshandake Sandy Land, Inner Mongolia: A Threshold Response to the East Asian Summer Monsoon Variations

Sheng

Jiang

Wang

et al. 2023

Geochem Geophys Geosyst

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We report the first complete loess–paleosol record spanning the last 130 kyr from the southern extremity of the Hunshandake Sandy Land (HSL) in central‐eastern Mongolia. Our combined mineral magnetic and geochemical results demonstrate that during the last interglacial, the front of the East Asian summer monsoon (EASM) extended to central‐eastern Inner Mongolia, consistent with modern observations of climate change. However, during the last glacial, typical magnetic parameters (e.g., magnetic susceptibility and anhysteretic remanent magnetization and their ratios), which have been successfully adopted to denote the EASM variations on the Chinese Loess Plateau (CLP), show only muted temporal variations and cannot be readily correlated with equivalent records from the main body of the CLP. Remarkably, the Zr/Rb ratio, a robust geochemical indictor of the winter monsoon, is positively correlated with saturation isothermal remanent magnetization and saturation magnetization during the last glacial, demonstrating the strong control of wind vigor on high‐field magnetization signals dominated by lithogenic ferrimagnetic minerals. In contrast to the variable response of magnetic parameters to regional paleoclimatic fluctuations, the Rb/Sr and Ba/Sr ratios (two summer monsoon indicators) faithfully track weak chemical weathering processes and fine‐scale monsoon oscillations, especially during the last glacial. Additionally, we found that higher proportions of pedogenic high‐coercivity magnetic minerals were formed during the last interglacial, which may reflect relatively low rainfall but higher evapotranspiration in the southern extremity of the HSL compared with the CLP. We therefore attribute this complex magnetic record to a threshold response to the EASM variations in eastern Inner Mongolia.

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East Gobi megalake systems reveal East Asian Monsoon dynamics over the last interglacial-glacial cycle

Cited by 13 publications

References 84 publications

Late Paleocene to early Oligocene fire ecology of the south Mongolian highland

Late Paleocene to early Oligocene fire ecology of the south Mongolian highland

A Novel and Extensible Remote Sensing Collaboration Platform: Architecture Design and Prototype Implementation

Magnetoclimatological Record of Late Pleistocene Loess in the Southern Hunshandake Sandy Land, Inner Mongolia: A Threshold Response to the East Asian Summer Monsoon Variations

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