兰州大学机构库 >资源环境学院
Study on lake sediments and human activities in closed basins around the Qilian Mountains
Gao, Mingjun1; Li, Y(李育)1,2; Zhang, Zhansen1; Zhou, Xueru1; Li, Haiye1; Duan, Junjie1; Xue, Yaxin1
2023-05
Source Publication地理学报   Impact Factor & Quartile
ISSN0375-5444
Volume78Issue:5Pages:1192-1212
AbstractThe process and mechanism of coupling between human activities and Holocene environmental change has become a research hotspot in the field of earth sciences. Lake sediments store rich environmental information, which can help to reconstruct past climate changes. Up to now, most of the studies on the palaeoenvironmental proxies indicating human activities have focused on single lakes, and there is a lack of comprehensive studies at a regional scale. Furthermore, relatively few studies focus on the identification of regional human activities through the paleoenvironmental proxies, partly due to the uncertainty of their indicative significance. In this paper, we analyzed the lithology, ages, and palaeoenvironmental proxy data from 14 closed-basin lakes around the Qilian Mountains, reconstructed the Holocene climate change, and explored the coupling relationship between climate change and human activities. The results are as follows: the organic matter in the terminal lakes in the Qilian Mountains and the surroundings is mostly from the mixed sources of aquatic and terrestrial plants; it was warm and humid during the early and middle Holocene around the Qilian Mountains, then it has experienced significant regional aridification since the late Holocene; the changes of sedimentary facies are consistent with proxies, which have different significance in various sediments. The changes of lake sedimentary facies have been affected by human activities since 2.0 cal ka BP, and human activities have dominated the regional environmental changes since 1800 AD. © 2023 Science Press. All rights reserved.
KeywordClimate change Landforms Lithology Sedimentology Sediments Closed basin Environmental change Environmental information Holocenes Hotspots Human activities Lake sediments Paleoenvironmental proxy Qilian mountains Sedimentary facies
PublisherScience Press
DOI10.11821/dlxb202305009
Indexed ByEI
Language中文
EI Accession Number20232914413413
EI KeywordsLakes
EI Classification Number443.1 Atmospheric Properties ; 481.1 Geology ; 483 Soil Mechanics and Foundations
Original Document TypeJournal article (JA)
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/532103
Collection资源环境学院
Corresponding AuthorLi, Yu
Affiliation
1.College of Earth and Environmental Sciences, Lanzhou University, Lanzhou; 730000, China;
2.Key Laboratory of Western China's Environmental Systems, Ministry of Education, Lanzhou University, Lanzhou; 730000, China
First Author AffilicationLanzhou University
Corresponding Author AffilicationLanzhou University;  College of Earth Environmental Sciences
Recommended Citation
GB/T 7714
Gao, Mingjun,Li, Yu,Zhang, Zhansen,et al. Study on lake sediments and human activities in closed basins around the Qilian Mountains[J]. 地理学报,2023,78(5):1192-1212.
APA Gao, Mingjun.,Li, Yu.,Zhang, Zhansen.,Zhou, Xueru.,Li, Haiye.,...&Xue, Yaxin.(2023).Study on lake sediments and human activities in closed basins around the Qilian Mountains.地理学报,78(5),1192-1212.
MLA Gao, Mingjun,et al."Study on lake sediments and human activities in closed basins around the Qilian Mountains".地理学报 78.5(2023):1192-1212.
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