干旱区生态环境知识资源中心(Arid): 新疆策勒沙漠与砾质戈壁新月形沙丘表面沉积物粒度特征及其沉积环境

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	新疆策勒沙漠与砾质戈壁新月形沙丘表面沉积物粒度特征及其沉积环境
其他题名	Grain-size characteristics and sedimentary environment of sediments on the surfaces of crescent-shaped dunes in the desert and gravel Gobi in Cele,Xinjiang
	苏松领; 毛东雷; 蔡富艳; 曹永香; 开买尔古丽·阿不来提; 王雪梅
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2020
卷号	34 期号:8 页码:124-132
中文摘要	不同下垫面对同种类型的沙丘的表面风沙沉积物特征产生重要影响,通过数理统计法对新疆策勒沙漠与砾质戈壁新月形沙丘表面不同地貌部位表面沙物质的粒度进行分析,探讨不同下垫面形成的相同的沙丘类型而导致沙丘的粒度特征存在的空间差异及其原因。结果表明:沙漠新月形沙丘比砾质戈壁新月形沙丘表面沙物质的平均粒径更细,分选性较好,偏度更趋于粗偏,峰态更趋于宽峰态。沙漠新月形沙丘表面沙物质主要由极细沙、细沙、极粗粉沙组成,百分含量分别为58.67%、20.23%、16.83%,其侧翼表面沙物质平均粒径最粗,约为118.99mum,砾质戈壁新月形沙丘表面沙物质主要由中沙、细沙、极细沙、极粗粉沙、粗沙组成,百分含量分别为26.53%、26.43%、26.36%、9.58%、9.14%,其顶部表面沙物质平均粒径最粗,约为291.48mum。沙漠新月形沙丘表面沙物质分选系数介于1.45-1.73之间,属于中等-较好分选性,偏度值介于-0.03-0.07之间,主要表现为对称,峰态值介于0.96-1.01之间,属于常峰态,砾质戈壁新月形沙丘表面沙物质分选系数介于1.99-2.44之间,主要属于较差分选性,偏度值介于-0.32-0.04之间,主要表现为对称-细偏,峰态值介于0.76-1.15之间,主要表现为常-较窄峰态。沙漠新月形沙丘的形成环境是风成沉积环境,砾质戈壁新月形沙丘的形成环境是风成沉积环境、河流冲积(洪积)环境。策勒沙丘表面沙物质平均粒径由粗到细依次为砾质戈壁新月形沙丘、沙漠新月形沙丘、回涡沙丘、灌丛沙堆。沙源、地形、风动力条件、沙场特征等方面的差异,造成策勒沙漠与砾质戈壁新月形沙丘表面沙物质粒度特征产生空间差异。
英文摘要	Different landscapes influence the grain size characteristics of surface aeolian sediment of the same type of sand dunes.The particle size of surface sands in different geomorphological parts of the desert and gravel Gobi crescent in Cele county of Xinjiang was analyzed by mathematical statistical method.The same dune types formed by different landscape types result in spatial differences in the grain size characteristics of the dunes were discussed.The results show that the average particle sizes on desert surfaces are more finer than that of the gravel Gobi crescent-shaped dune,and the sorting property is better.The skewness value tends to be coarser skewed, and the kurtosis value tends to be platykurtic distribution.The surface aeolian sediments of the desert crescent-shaped dunes are mainly composed of very fine sand,fine sand and very coarse silt particles,with a percentage of 58.67%,20.23% and 16.83%,respectively.The average grain size of the sand particles on the flanking surface is the coarsest,which is 118.99mum.The sand material composition on the surface of gravel Gobi crescent-shaped dunes is mainly medium sand,fine sand,minimum fine sand,maximum coarse silt and coarse sand particles.The percentages are 26.53%,26.43%,26.36%,9.58% and 9.14%,respectively,and the average grain size of sand materials on the top surface is the coarsest,which is 291.48mum.The sorting coefficient of sand materials on the desert dune is between 1.45 and 1.73,which is moderately-well sorted.The skewness values are in the range between-0.03 and 0.07,and the main performance is symmetrical.The kurtosis value is in the range between 0.96 and 1.01,which belongs to mesokurtic distribution;the sorting coefficient of sand materials on the surfaces of the gravel Gobi dunes is in the range between 1.99 and 2.44,which is mainly poor sorted.The skewness value is in the range between-0.32 and 0.04,which is mainly symmetrical-fine skewed,kurtosis values is in the range between 0.76 and 1.15,which is mainly in the mesokurtic-leptokurtic distribution.The formation environment of desert crescent-shaped sand dunes belongs to aeolian sedimentary environment.The formation environment of gravel Gobi crescent-shaped sand dunes belongs to aeolian sedimentary environment and river alluvial(fluvial)environment.The average particle size of the sand on the surfaces of sand dunes in Cele changes from coarse particles to fine sand particles,the order is from gravel gobi crescent dunes,desert crescent dunes,echo sand dunes,and nebkhas dunes.Differences in sand sources,topography, wind dynamic conditions,and sand field characteristics have caused differences in the grain size characteristics of the sand materials on the surfaces of crescent dunes in the desert and gravel Gobi.
中文关键词	粒度特征 ; 新月形沙丘 ; 风沙沉积物 ; 沙漠 ; 砾质戈壁 ; 策勒
英文关键词	grain size characteristics crescent-shaped dunes aeolian sediments desert gravel Gobi Cele
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6779555
来源机构	新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336767
作者单位	苏松领, 新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐, 新疆 830054, 中国.; 毛东雷, 新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐, 新疆 830054, 中国.; 曹永香, 新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐, 新疆 830054, 中国.; 开买尔古丽·阿不来提, 新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐, 新疆 830054, 中国.; 王雪梅, 新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐, 新疆 830054, 中国.; 蔡富艳, 乌鲁木齐职业大学应用工程学院, 乌鲁木齐, 新疆 830002, 中国.
推荐引用方式 GB/T 7714	苏松领,毛东雷,蔡富艳,等. 新疆策勒沙漠与砾质戈壁新月形沙丘表面沉积物粒度特征及其沉积环境[J]. 新疆师范大学,2020,34(8):124-132.
APA	苏松领,毛东雷,蔡富艳,曹永香,开买尔古丽·阿不来提,&王雪梅.(2020).新疆策勒沙漠与砾质戈壁新月形沙丘表面沉积物粒度特征及其沉积环境.干旱区资源与环境,34(8),124-132.
MLA	苏松领,et al."新疆策勒沙漠与砾质戈壁新月形沙丘表面沉积物粒度特征及其沉积环境".干旱区资源与环境 34.8(2020):124-132.