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  • ISSN 1000-694X
  • 双月刊 创刊于1981年
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中国地理学会沙漠分会2014年学术研讨会论文选

唐丽,董玉祥.华南海岸现代风成沙与海滩沙的粒度特征差异

  • 唐丽 ,
  • 董玉祥
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  • 1. 中山大学 地理科学与规划学院/广东省城市化与地理环境空间模拟重点实验室, 广东 广州 510275;
    2. 广州大学 教师培训学院, 广东 广州 510405
唐丽(1987-),女,湖南东安人,硕士研究生,研究方向为海岸风沙地貌.Email: 496493392@qq.com

收稿日期: 2014-06-10

  修回日期: 2014-08-20

  网络出版日期: 2015-01-20

基金资助

国家自然科学基金项目(40971007,41371030)

Characteristics of Grain Size of Modern Aeolian Sand and Beach Sand in coast of South China

  • Tang Li ,
  • Dong Yuxiang
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  • 1. School of Geography and Planning/Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-Sen University, Guangzhou 510275, China;
    2. School of Teacher Training, Guangzhou University, Guangzhou 510405, China

Received date: 2014-06-10

  Revised date: 2014-08-20

  Online published: 2015-01-20

摘要

基于华南海岸沙丘集中分布的闽南、粤东、粤西、海南岛沿岸141个现代沙丘沙和70个海滩沙样品的粒度数据,从粒径组成、粒度参数、粒度参数图和概率累积曲线等方面,分析了华南海岸现代风成沙与海滩沙的粒度差异特点.结果表明:现代沙丘沙较海滩沙细、分选程度变好、正偏相对增多及峰态变窄,但二者的差异并不显著,其概率累积曲线相近且一般通过粒度参数图难以区分,差异程度还呈现出明显的区域性.上述差异主要受华南海岸沙丘发育时间较短、季风气候的风向交替、台风频发、风沙活动空间不足、沙源粗细不同与沙丘规模差别等因素影响.

本文引用格式

唐丽 , 董玉祥 . 唐丽,董玉祥.华南海岸现代风成沙与海滩沙的粒度特征差异[J]. 中国沙漠, 2015 , 35(1) : 14 -23 . DOI: 10.7522/j.issn.1000-694X.2014.00114

Abstract

Based on the data of grain size of 141 modern aeolian sand samples and 70 beach sand samples located in the southern Fujian coast, eastern Guangdong coast, western Guangdong coast and Hainan island coast, which are the typical coastal dune distribution places in south China coast, the difference characteristics of grain size of modern aeolian sand and beach sand in south China coast are analyzed by use of grain size parameters such as the component of grain size, mean size, standard deviation, skewness and kurtosis. The results show that, compared with the beach sand, modern aeolian sand have the characteristics of thinner grain size, higher sorting degree, more positive skewness and sharper kurtosis. But modern aeolian sand and beach sand in south China coast have no marked difference, they have the similar probability cumulative curve and normal could not be distinguished by use of the parameter plot of grain size. Meanwhile, the difference of modern aeolian sand and beach sand clearly changes in different coastal regions. These difference characteristics of modern aeolian sand and beach sand in south China coast are mainly resulted from the short formation time of coastal aeolian dunes, wind direction change of monsoon climate, high frequency typhoon, narrow space for aeolian activities, sand sources of different grain size and different scale of coastal dune.

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