Formation Age and Causes of Alpine Meadow Soil in Three River Headwater Region Based on Optically Stimulated Luminescence Dating

doi:10.13961/j.cnki.stbctb.2022.01.022

Home > Archive>Volume 42, Issue 1, 2022 >158-165. DOI:10.13961/j.cnki.stbctb.2022.01.022

Formation Age and Causes of Alpine Meadow Soil in Three River Headwater Region Based on Optically Stimulated Luminescence Dating
DOI:
                        10.13961/j.cnki.stbctb.2022.01.022
                    
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                        XianbajiXianbaji
Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining, Qinghai 810001, China;Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai 810008, China
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E ChongyiE Chongyi
Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining, Qinghai 810001, China;Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai 810008, China;Academy of Plateau Science and Sustainability, Peoples Government of Qinghai Province & Beijing Normal University, Xining, Qinghai 810008, China
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Sun ManpingSun Manping
Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining, Qinghai 810001, China;Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai 810008, China
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Zhang JingZhang Jing
Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining, Qinghai 810001, China;Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai 810008, China
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Zhang ShuaiqiZhang Shuaiqi
Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining, Qinghai 810001, China;Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai 810008, China
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Xie LiqianXie Liqian
Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining, Qinghai 810001, China;Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai 810008, China
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Clc Number:S153.6;P95
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Abstract:

[Objective] The age, occurrence, and development of alpine meadow soil in the Three River headwater region were analyzed to provide guidance for maintaining soil and ecological security in the region. [Methods] The formation and development time of the soil profiles from Xiaqiong, Xiewu, Tongledong, and Doudicun in the Three River headwater region were determined using the optically stimulated luminescence (OSL) dating method of coarse-grained quartz and potassium feldspar (K-feldspar). [Results] The development time of alpine meadow soil in this area was Early Holocene (13—8 ka) and Late Holocene (3—0 ka). The four soil profiles were developed on slope and eolian parent material, respectively. The elemental geochemical characteristics of different soil layers were consistent with the typical aeolian loess in this area. [Conclusion] The development of alpine meadow soil was concentrated in the Holocene period. The parent material of soil was mainly the mixed parent material of slope deposits and aeolian deposits. The input of aeolian dust is of great significance to soil formation in the Three River headwater region, and is also the original material source of slope deposits in this area. The release of aeolian dust during the relatively arid period of Holocene is of great significance to the formation of meadow soil.

Key words:alpine meadow soil;optically stimulated luminescence dating;Holocene;Three River headwater region;elemental geochemistry

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先巴吉,鄂崇毅,孙满平,张晶,张帅旗,谢丽倩.基于光释光测年法的三江源地区高山草甸土形成年代与成因研究[J].水土保持通报英文版,2022,42(1):158-165

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Received:July 23,2021
Revised:October 08,2021
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Online: March 12,2022
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