兰州大学机构库
Quantitative reconstruction of precipitation changes in the Mongolian Altai Mountains since 13.7 ka
Hu, Yu1; Huang, Xiaozhong1; Demberel, Otgonbayar2; Zhang, Jun1; Xiang, Lixiong1; Gundegmaa, Vanjil3; Huang, Chong1; Zheng, Min1; Zhang, Jiawu1; Qiang, Mingrui4; Xiao, Jule5; Chen, Fahu1,6
2024-01
Source PublicationCATENA   Impact Factor & Quartile
ISSN0341-8162 ; 1872-6887
EISSN1872-6887
Volume234
page numbers13
AbstractHolocene climate changes in the Altai Mountains and the surrounding areas are well documented, but the timing of the Holocene precipitation maximum remains controversial. We obtained 17 accelerator mass spectrometry (AMS) C-14 dates and 310 fossil pollen assemblages from sediments in Tolbo Lake, which we used to reconstruct the history of vegetation and climate change in the Mongolian Altai Mountains over the past 13,750 years. The results suggest that mean annual precipitation (P-ann) was the most significant control on the fossil pollen record at the study site. Based on the fossil pollen record from Tolbo Lake and 469 surface pollen samples within the radius of 1300 km, the reconstructed P-ann was lowest during 13.7-11.3 ka (1 ka = 1,000 cal yr BP); relatively low but increasing P-ann occurred in the early Holocene (11.3-9.4 ka); and maximum P-ann occurred during the middle to late Holocene (after 6.8 ka), possibly because of the high temperatures. A significant climatic and ecological transition occurred in the Altai Mountains at similar to 7 ka: steppe and desert steppe vegetation with generally low P-ann was present before similar to 7 ka, while subsequently there was the expansion of forest vegetation and a marked increase in P-ann, possibly in response to the minimum in Northern Hemisphere ice sheets and the increased radiative forcing caused by rising atmospheric greenhouse gases.
KeywordTolbo Lake Pollen analysis Mean annual precipitation Mongolian Altai Mountains
PublisherELSEVIER
DOI10.1016/j.catena.2023.107536
Indexed BySCIE
Language英语
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:001086727700001
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568344
Collection兰州大学
Corresponding AuthorHuang, Xiaozhong
Affiliation
1.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China;
2.Natl Univ Mongolia, Khovd Branch Sch, Khovd 84000, Mongolia;
3.Mongolian Natl Univ Educ, Sch Math & Nat Sci, Dept Biol, Ulaanbaatar 210648, Mongolia;
4.South China Normal Univ, Sch Geog, Guangzhou, Peoples R China;
5.Chinese Acad Sci, Inst Geol & Geophys, CAS Key Lab Cenozo Geol & Environm, Beijing, Peoples R China;
6.Chinese Acad Sci, Inst Tibetan Plateau Res, Alpine Paleoecol & Human Adaptat Grp ALPHA, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Hu, Yu,Huang, Xiaozhong,Demberel, Otgonbayar,et al. Quantitative reconstruction of precipitation changes in the Mongolian Altai Mountains since 13.7 ka[J]. CATENA,2024,234.
APA Hu, Yu.,Huang, Xiaozhong.,Demberel, Otgonbayar.,Zhang, Jun.,Xiang, Lixiong.,...&Chen, Fahu.(2024).Quantitative reconstruction of precipitation changes in the Mongolian Altai Mountains since 13.7 ka.CATENA,234.
MLA Hu, Yu,et al."Quantitative reconstruction of precipitation changes in the Mongolian Altai Mountains since 13.7 ka".CATENA 234(2024).
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