[1]乌日查呼,春喜*,张卫青,等. 浑善达克沙地沙粒特征及其沉积环境[J].西北林学院学报,2021,36(1):69-76.[doi:10.3969/j.issn.1001-7461.2021.01.10]
　WURI Cha-hu,CHUN Xi*,ZHANG Wei-qing,et al. Grain Size Analysis and the Sedimentary Environment in Otindag Sandy Land[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(1):69-76.[doi:10.3969/j.issn.1001-7461.2021.01.10]
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 浑善达克沙地沙粒特征及其沉积环境()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第1期
页码:
69-76
栏目:
出版日期:
2021-01-31

文章信息/Info

Title:
 Grain Size Analysis and the Sedimentary Environment in Otindag Sandy Land
文章编号:
1001-7461(2021)01-0069-08
作者:
 乌日查呼1; 2; 春喜1; 3*; 张卫青1; 2; 张样洋1; 2
 （1.内蒙古自治区蒙古高原环境与全球变化重点实验室，内蒙古 呼和浩特 010022；2.内蒙古师范大学 地理科学学院，内蒙古 呼和浩特 010022；3.内蒙古自治区湿地环境修复工程实验室，内蒙古 呼和浩特 010022）
Author(s):
 WURI Cha-hu1; 2; CHUN Xi1; 3*; ZHANG Wei-qing1; 2; ZHANG Yang-yang1; 2
 （1.Key Laboratory of Inner Mongolian Plateau Environment and Global Change,Hohhot 010022,Inner Mongolian,China;2.College of Geographic Science,Inner Mongolian Normal University,Hohhot 010022,Inner Mongolian,China;3.Inner Mongolia Repair Engineering Laboratory of Wetland Eco-Environment System,Hohhot 010022,Inner Mongolian,China）
关键词:
 ; 浑善达克沙地; 表层沉积物; 粒度特征; 空间分异
Keywords:
 ; Otindag sandy land;  surface sediment;  grain size character;  spatial differentiation
分类号:
S157.1
DOI:
10.3969/j.issn.1001-7461.2021.01.10
文献标志码:
A
摘要:
 对浑善达克沙地进行野外考察和采集表层沙样，通过激光粒度仪测量其沙粒粒径，分析其内部不同区域沉积物粒度特征、空间分异规律和沉积环境，为治理该沙地提供理论依据。结果表明，浑善达克沙地内部不同区域表层沉积物粒度组成上有较大的差异，总体以细沙和中沙为主，平均含量分别为43.9%和34.72%；粉沙、极细沙、粗砂含量较少。中值粒径从西到东逐渐变细；分选系数为0.94Φ，分选性整体较差，沿盛行风向有变好的趋势；偏度和峰度均值分别为0.16和1.23。粒度频率曲线指示该沙地沉积环境多样，沉积过程复杂。中西部沙物质以河流及湖泊沉积为主；东部则主要分布风成沉积，其部分物质可能来源于沙地内部的河流碎屑物或更西部的河湖相沉积。
Abstract:
 In this study,surface sediment samples were collected from different areas of Otindag sandy land and the grain size was measured by laser particle size analyzer to examine the distribution characteristics and sedimentary environment.The results showed that there existed significant differences in the grain size composition of surface sediments in different areas in Otindag sandy land.The surface sand samples were mainly fine and medium size sands,accounting for 43.9% and 34.72%,respectively.The contents of silty and coarse sands were far lower than the fine and medium size sands.The content of medium size sand gradually decreased from west to east.The sorting coefficient was 0.94Φ,and the overall sorting features were poor,which tended to get better along with the direction of prevailing wind.The values of the mean skewness and kurtosis were 0.16 and 1.23,respectively.The grain size frequency curve indicated that the sedimentary environments and the deposition process in the sandy land were complex.The sand sample located in central and western Otindag sandy land was mainly lacustrine or river environment,aeolian deposits were mainly distributed in the east,some of which may come from the fluvial debris inside the sandy land or the fluvial and lacustrine sediments in the west area of the sandy land.

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备注/Memo

备注/Memo:
 收稿日期：2020-03-05修回日期：2020-04-15
基金项目：国家自然科学基金(41662011，41561050)；内蒙古基金（2019ZD10，2019GG020）。
作者简介：乌日查呼。研究方向：环境变化。E-mail:1916107835@qq.com
*通信作者：春喜，教授，博士生导师。研究方向：环境演变。E-mail:chunxi@inmu.edu.cn
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