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呼伦贝尔沙地风沙土粒径分布特征

陈宇轩 高广磊 张英 丁国栋 朴起亨 赵洋 王陇

陈宇轩, 高广磊, 张英, 丁国栋, 朴起亨, 赵洋, 王陇. 呼伦贝尔沙地风沙土粒径分布特征[J]. 北京林业大学学报, 2019, 41(8): 124-130. doi: 10.13332/j.1000-1522.20180348
引用本文: 陈宇轩, 高广磊, 张英, 丁国栋, 朴起亨, 赵洋, 王陇. 呼伦贝尔沙地风沙土粒径分布特征[J]. 北京林业大学学报, 2019, 41(8): 124-130. doi: 10.13332/j.1000-1522.20180348
Chen Yuxuan, Gao Guanglei, Zhang Ying, Ding Guodong, Park Kihyung, Zhao Yang, Wang Long. Particle size distribution of aeolian soils in Hulun Buir Sandy Land, Inner Mongolia of northern China[J]. Journal of Beijing Forestry University, 2019, 41(8): 124-130. doi: 10.13332/j.1000-1522.20180348
Citation: Chen Yuxuan, Gao Guanglei, Zhang Ying, Ding Guodong, Park Kihyung, Zhao Yang, Wang Long. Particle size distribution of aeolian soils in Hulun Buir Sandy Land, Inner Mongolia of northern China[J]. Journal of Beijing Forestry University, 2019, 41(8): 124-130. doi: 10.13332/j.1000-1522.20180348

呼伦贝尔沙地风沙土粒径分布特征

doi: 10.13332/j.1000-1522.20180348
基金项目: 国家自然科学基金项目(31600583),中央高校基本科研业务费专项(2017PT03、2015ZCQ-SB-02)
详细信息
    作者简介:

    陈宇轩。主要研究方向:土壤风蚀。Email:chenyx_1995@bjfu.edu.cn 地址:100083 北京市海淀区清华东路35号北京林业大学水土保持学院

    责任作者:

    高广磊,副教授。主要研究方向:荒漠生态学。Email:gaoguanglei@bjfu.edu.cn 地址:同上

Particle size distribution of aeolian soils in Hulun Buir Sandy Land, Inner Mongolia of northern China

  • 摘要: 目的土壤粒径分布可显著影响土壤风蚀强度,研究其变化特征,对阐明风沙运动过程及其影响因素具有重要意义。方法以呼伦贝尔沙地流动、半固定和固定沙丘表层风沙土为研究对象,采用激光衍射技术测定土壤粒径分布,计算分析不同类型沙丘风沙土粒度组成、粒度参数和粒配曲线。结果研究结果显示:(1)呼伦贝尔沙地表层风沙土以砂粒为主,其含量可达60% ~ 80%,黏粒与粉粒含量较少。随沙丘的固定,土壤黏粒、粉粒与极细砂含量显著增加(P < 0.05),细砂、中砂与粗砂含量显著减少(P < 0.05),极粗砂含量无显著变化(P > 0.05)。(2)沙地土壤平均粒径较粗,分选性较差,粒度分布较集中,偏度情况为极正偏,峰度值为尖窄,分形维数介于2.25 ~ 2.49之间。随沙丘的固定,风沙土粒度组成不断细化,粒径分布的对称性与均匀程度不断优化,分形维数不断增大。(3)沙地不同类型沙丘的土壤粒度频率分布曲线均具有唯一峰值。流动沙丘跃移与蠕移组分的分选性较好;固定沙丘悬移组分的分选性较好。随沙丘的固定,在组分之间过渡时,土壤颗粒变化的剧烈程度不断降低。结论呼伦贝尔沙地不同类型沙丘风沙土粒径分布特征差异显著,研究结果反映了风沙土粒径分布随沙丘固定的变化特征,可为呼伦贝尔沙地土地沙漠化防治提供理论支撑。

     

  • 图  1  研究区采样点分布图

    Figure  1.  Distribution of the sampling sites in the study area

    图  2  研究区土壤粒度频率分布曲线

    Figure  2.  Distribution curve of soil particle size frequency in the study area

    图  3  研究区土壤粒度累计频率分布曲线

    Figure  3.  Distribution curve of accumulated soil particle size frequency in the study area

    表  1  不同类型沙丘土壤粒度体积百分数

    Table  1.   Soil particle distribution in different types of sand dune %

    沙丘类型
    Sand dune type
    黏粒
    Clay
    粉粒
    Silt
    砂粒 Sand
    极细砂
    Very fine sand
    细砂
    Fine sand
    中砂
    Middle sand
    粗砂
    Coarse sand
    极粗砂
    Very coarse sand
    流动沙丘 Mobile sand dune 1.00 ± 1.11a 13.50 ± 11.75a 7.87 ± 8.23a 34.70 ± 13.09b 34.55 ± 18.72c 7.75 ± 9.20b 0.63 ± 1.81a
    半固定沙丘 Semi-fixed sand dune 1.87 ± 1.11a 25.56 ± 12.00b 17.37 ± 9.14b 29.59 ± 8.60ab 18.94 ± 13.06b 6.34 ± 5.38ab 0.33 ± 0.44a
    固定沙丘 Fixed sand dune 2.85 ± 1.27b 34.27 ± 12.27c 19.79 ± 6.43b 25.03 ± 9.66a 13.09 ± 8.35a 4.56 ± 3.01a 0.41 ± 0.79a
    注:同列不同字母表示差异显著(P < 0.05)。下同。Notes: different letters in the same column mean the difference is significant (P < 0.05). Same as below.
    下载: 导出CSV

    表  2  不同类型沙丘土壤粒度参数(Φ值)

    Table  2.   Soil particle parameters in different types of sand dune (Φ value)

    沙丘类型
    Sand dune type
    平均粒径
    Average particle size
    标准偏差
    Standard deviation
    偏度值
    Skewness
    峰度值
    Kurtosis
    分形维数
    Fractal dimension
    流动沙丘 Mobile sand dune 2.51 ± 0.88a 1.26 ± 0.44a 1.16 ± 0.24b 1.46 ± 0.32b 2.25 ± 0.18a
    半固定沙丘 Semi-fixed sand dune 3.30 ± 0.77b 1.73 ± 0.29b 1.00 ± 0.12a 1.34 ± 0.27b 2.41 ± 0.12b
    固定沙丘 Fixed sand dune 3.81 ± 0.69c 1.93 ± 0.31c 1.00 ± 0.18a 1.21 ± 0.23a 2.49 ± 0.08c
    下载: 导出CSV
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  • 收稿日期:  2018-10-25
  • 修回日期:  2018-11-28
  • 网络出版日期:  2019-05-31
  • 刊出日期:  2019-08-01

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