Arid
DOI10.1016/j.quaint.2017.06.048
Holocene environmental changes in the Horqin desert revealed by OSL dating and delta C-13 analyses of paleosols
Guo, Licheng1,2; Xiong, Shangfa1; Yang, Ping3; Ye, Wei3; Jin, Guiyun4; Wu, Wenwan4; Zhao, Hua5
通讯作者Guo, Licheng
来源期刊QUATERNARY INTERNATIONAL
ISSN1040-6182
EISSN1873-4553
出版年2018
卷号469页码:11-19
英文摘要

The Horqin desert in northeastern China is located on the climatically-sensitive margin of the East Asian summer monsoon front and the paleosols in the desert potentially provide a record of environmental changes in the region. During the last two decades several paleoenvironmental studies have increased our knowledge of past shifts in the desert-grassland border in the deserts of northeastern China. However, studies of Holocene vegetation changes with high-quality age data are scarce. Here, we present the results of optically stimulated luminescence dating and analyses of magnetic susceptibility, total organic carbon and the stable carbon isotope composition of organic matter, and inferred C-4 biomass, of the paleosol sequences of the Tuquan and Mutougou sections in the Horqin desert and utilize them to document Holocene environmental changes in the region. The results reveal that the East Asian summer monsoon precipitation gradually increased and previously unstable dunes were semi-stabilized from similar to 11 to 9 ka. The semiarid conditions were then replaced by the more humid environment of the Holocene climatic optimum from similar to 9 to 5 ka. During the Holocene climatic optimum, the paleosols in the Tuquan and Mutougou sections developed, and the percentage of C-4 plants increased and the dunes in the Horqin desert were extensively stabilized. Subsequently, alternation of eolian sand mobilization and paleosol development occurred, indicating that the environment became cold and dry, with temporary wet and warm stages. Estimates of C-4 biomass from the two sections demonstrate that the favorable growing conditions for C-4 plants extended to at least 45 degrees N in North China during the Holocene. We conclude that Holocene environmental changes in the Horqin desert were controlled by movements of the East Asian summer monsoon rainfall belt on a millennial time scale, and that human activity also played a significant role in environmental change during the late Holocene. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.


英文关键词Horqin desert Holocene East Asian summer monsoon rainfall belt OSL dating C-4 plants
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000428186900003
WOS关键词LAST GLACIAL MAXIMUM ; INNER-MONGOLIA ; ASIAN MONSOON ; NORTHERN CHINA ; VEGETATION CHANGES ; DUNE EVOLUTION ; LOESS PLATEAU ; DAIHAI LAKE ; CLIMATE ; PRECIPITATION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构中国科学院地质与地球物理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212444
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China;
4.Shandong Univ, Inst Cultural Heritage, Dept Archaeol, Jinan 250100, Shandong, Peoples R China;
5.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China
推荐引用方式
GB/T 7714
Guo, Licheng,Xiong, Shangfa,Yang, Ping,et al. Holocene environmental changes in the Horqin desert revealed by OSL dating and delta C-13 analyses of paleosols[J]. 中国科学院地质与地球物理研究所,2018,469:11-19.
APA Guo, Licheng.,Xiong, Shangfa.,Yang, Ping.,Ye, Wei.,Jin, Guiyun.,...&Zhao, Hua.(2018).Holocene environmental changes in the Horqin desert revealed by OSL dating and delta C-13 analyses of paleosols.QUATERNARY INTERNATIONAL,469,11-19.
MLA Guo, Licheng,et al."Holocene environmental changes in the Horqin desert revealed by OSL dating and delta C-13 analyses of paleosols".QUATERNARY INTERNATIONAL 469(2018):11-19.
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