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Journal of Natural Resources, Volume. 35, Issue 12, 3076(2020)

Variation of grain sizes for surface sediments of Fozhang dune in Yarlung Zangbo River Valley

Mei-hui PAN1、*, An-na YANG1, Yong-qiu WU2, Jian-jun MA1, and Wen-xuan XUE1
Author Affiliations
  • 1Collage of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
  • 2Ministry of Education Engineering Center of Desertification and Blown-sand Control, Beijing Normal University, Beijing 100875, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (4)
    References (42)
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    Figures & Tables(10)
    Overview of the study area and sand sampling sites

    Fig. 1. Overview of the study area and sand sampling sites

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    Grain grading diagram of sediments in various parts of barchan dune

    Fig. 2. Grain grading diagram of sediments in various parts of barchan dune

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    Grain size parameters of different parts of barchan dunes

    Fig. 3. Grain size parameters of different parts of barchan dunes

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    Frequency distribution curve and probability accumulation curve

    Fig. 4. Frequency distribution curve and probability accumulation curve

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    Triangulation of major components

    Fig. 5. Triangulation of major components

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    Scatter plot of altitude and mean particle size

    Fig. 6. Scatter plot of altitude and mean particle size

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    • Table 1. Size classification principle (mm)

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      Table 1. Size classification principle (mm)

      粒级粘土粉砂极细砂细砂中砂粗砂
      粒径< 0.0040.004~0.0630.063~0.1250.125~0.250.25~0.5> 0.5

    • Table 2. The surface sediment grain-size parameters (%)

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      Table 2. The surface sediment grain-size parameters (%)

      采样点粒级级配/mm
      黏土（<0.004）粉砂（0.004~0.063）极细砂（0.063~0.125）细砂（0.125~0.25）中砂（0.25~0.5）粗砂（0.5~2）
      河漫滩（n=3）0.649.899.3624.6637.0618.39
      佛掌沙丘（n=30）XYSQ10.877.872.6525.4747.1815.95
      XYSQ21.108.673.5014.4742.3629.90
      XYSQ31.068.742.7222.2448.3416.91
      XYSQ41.007.152.9941.2745.052.54
      平均值1.018.152.9525.6245.9116.36
      岗派公路（n=4）1.487.625.1544.2739.991.49

    • Table 3. The surface sediment grain-size distribution

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      Table 3. The surface sediment grain-size distribution

      采样位置平均粒径Mz/Φ标准偏差σ偏度Sk峰度KG
      平均值最大值最小值平均值最大值最小值平均值最大值最小值平均值最大值最小值
      河漫滩（n=3）2.032.131.891.341.391.280.330.350.311.321.341.28
      佛掌沙丘（n=30）XYSQ11.792.051.481.141.350.970.350.440.311.922.021.75
      XYSQ21.601.981.081.311.691.020.400.480.311.852.191.34
      XYSQ31.762.091.541.201.281.120.400.420.372.132.671.92
      XYSQ42.082.191.951.001.090.920.350.370.312.162.491.89
      平均值1.812.081.511.161.351.010.370.430.332.012.341.73
      岗派公路（n=4）2.202.331.951.061.200.870.360.390.312.172.312.02

    • Table 4. Sedimentary environment

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      Table 4. Sedimentary environment

      样品名Y1Y 2Y 3Y4沉积环境样品名Y1Y 2Y 3Y4沉积环境
      S12.824674131.2301-9.2421913.37072河流沉积S203.659976172.4304-14.470613.64723河流沉积
      S22.071131136.5549-10.154612.27891河流沉积S216.06424165.5133-12.322817.53943河流沉积
      S33.303797159.4643-12.716613.58776河流沉积S224.153659178.0651-14.391414.86125河流沉积
      S44.459592172.9453-14.890313.22971河流沉积S233.115749164.0291-12.577714.55346河流沉积
      S54.694816164.6117-14.13513.03626河流沉积S242.821948158.5968-11.537615.03225河流沉积
      S61.745887138.5882-9.4873113.50912河流沉积S251.156906137.4885-9.0025913.89613河流沉积
      S76.847499188.6318-17.639813.99275河流沉积S261.964407149.4952-10.336514.51887河流沉积
      S85.326945162.0224-13.680213.76779河流沉积S270.913255128.236-8.1675413.24203河流沉积
      S97.246369245.6958-24.75512.78646河流沉积S283.714843150.6511-10.046516.67934河流沉积
      S106.02602178.153-16.156113.32911河流沉积S292.799259146.1341-9.5422815.95078河流沉积
      S116.947143250.8451-26.719410.52672河流沉积S302.947681145.9214-10.282914.68935河流沉积
      S125.825869182.7372-16.617914.01623河流沉积G11.451956122.7787-7.4218113.86768河流沉积
      S136.072063132.6148-10.486514.32165河流沉积G22.850887170.7301-12.383215.98475河流沉积
      S143.179821130.97-10.461611.55524河流沉积G32.091708156.3564-10.719115.42191河流沉积
      S156.023858177.4651-15.618914.47563河流沉积G43.185725176.1426-13.833314.85862河流沉积
      S164.665626153.9757-12.917313.28976河流沉积H12.603355165.7395-15.14769.557715浊流沉积
      S175.62738171.8929-15.291813.66525河流沉积H22.681887179.1314-16.444910.06139河流沉积
      S185.613249176.6321-15.905913.68584河流沉积H32.983632191.8333-18.024910.20717河流沉积
      S195.07212165.5152-12.891515.79156河流沉积
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    Mei-hui PAN, An-na YANG, Yong-qiu WU, Jian-jun MA, Wen-xuan XUE. Variation of grain sizes for surface sediments of Fozhang dune in Yarlung Zangbo River Valley[J]. Journal of Natural Resources, 2020, 35(12): 3076

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    Paper Information

    Received: May. 30, 2019

    Accepted: --

    Published Online: May. 8, 2021

    The Author Email: PAN Mei-hui (panmh@nwnu.edu.cn)

    DOI:10.31497/zrzyxb.20201221

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