毛乌素沙地现代沙丘沙的粒度特征及其意义

doi:10.7522/j.issn.1000-694X.2015.00058

摘要/Abstract

摘要： 对毛乌素沙地不同类型41个现代沙丘的沙粒度分析结果表明,流动沙丘沙主要由细沙和中沙组成,平均粒径为2.17 Φ;固定-半固定沙丘沙的主要粒级是细沙和极细沙,平均粒径为3.09 Φ。流动沙丘沙平均粒径整体自西北到东南减小,而分选性总体表现为中等-较好,无明显空间变化规律。概率累计曲线和粒度特征参数散点图表明,毛乌素沙地沙丘沙以跃移搬运方式为主,存在着就地起沙和就地堆积的可能。平均粒径和分选性空间变化规律的差异,是在频繁强烈的风沙活动环境下物源和大气环流共同作用的结果。

关键词: 毛乌素沙地, 沙丘沙, 粒度特征, 空间变化

Abstract: In the Mu Us Sandy Land, 41 modern dune sand samples were collected and analyzed by laser particle analyzer. The results show that modern mobile dune sand is mainly composed of fine sand and medium sand with mean grain size of 2.17 Φ, While the main grain size fraction of modern fixed/semi-fixed dune sand is fine sand and very fine sandwith the mean grain size of 3.09 Φ. On the whole, the mean grain size of modern mobile dune sand becomes gradually shorter from the northwest to the southeast in the Mu Us Sandy Land, but the sorting don't see the similarity space change rule. The log-probability cumulative curves and grain size parameters scatter diagram show the Mu Us Sandy Land is in a frequent and strong wind activity environment, and the most important aeolian transports style is saltation, which implys a possibility of the local sand source and local accumulation. However, different space change rules of the mean grain size and sorting is the result of the interaction of the frequent strong wind environment, sand source and the atmospheric circulation.

Key words: Mu Us Sandy Land, dune sand, grain size characteristic, spatial variation

中图分类号:

P931.3

舒培仙, 牛东风, 李保生, 温小浩, 司月君, 郭亿华, 胡观冠. 毛乌素沙地现代沙丘沙的粒度特征及其意义[J]. 中国沙漠, 2016, 36(1): 158-166.

Shu Peixian, Niu Dongfeng, Li Baosheng, Wen Xiaohao, Si Yuejun, Guo Yihua, Hu Guanguan. Grain Size Characteristics of Modern Dune Sand and Its Significance in the Mu Us Sandy Land, China[J]. JOURNAL OF DESERT RESEARCH, 2016, 36(1): 158-166.

参考文献

[1] 朱震达,吴正,刘恕.中国沙漠概论[M].北京:科学出版社,1980.
[2] 吴正.风沙地貌与治沙工程学[M].北京:科学出版社,2003.
[3] Visher G S.Grain-size distributions and depositional processes[J].Journal of Sedimentary Petrology,1969,39(3):1074-1106.
[4] 吉启慧.粒度分析在塔克拉玛干沙漠研究中的应用[J].中国沙漠,1996,16(2):173-179.
[5] 陈渭南.塔克拉玛干沙漠84°E沿线沙物质的粒度特征[J].地理学报,1993,48(1):33-46.
[6] Wang X M,Dong Z B,Zhang J W,et al.Grain size characteristics of dune sands in the central Taklimakan Sand Sea[J].Sedimentary Geology,2003,161(1):1-14.
[7] Honda M,Shimizu H.Geochemical,mineralogical and sedimentological studies on the Taklimakan Desert sands[J].Sedimentology,1998,45(6):1125-1143.
[8] 钱亦兵,周兴佳,吴兆宁.准噶尔盆地沙物质粒度特征研究[J].干旱区研究,2000,17(2):34-41.
[9] 宁凯,李卓仑,王乃昂,等.巴丹吉林沙漠地表风积沙粒度空间分布及其环境意义[J].中国沙漠,2013,33(3):642-648.
[10] 钱广强,董治宝,罗万银,等.巴丹吉林沙漠地表沉积物粒度特征及区域差异[J].中国沙漠,2011,31(6):1357-1364.
[11] 何清,杨兴华,霍文,等.库姆塔格沙漠粒度分布特征及环境意义[J].中国沙漠,2009,29(1):18-22.
[12] Liu B L,Qu J J,Ning D H,et al.Grain-size study of aeolian sediments found east of Kumtagh Desert[J].Aeolian Research,2014,13:1-6.
[13] 哈斯.沙坡头地区新月形沙丘粒度特征[J].中国沙漠,2001,21(3):271-275.
[14] 黄杏珍,潘中海.应用粒度资料探讨毛乌素沙漠西南部的风沙特征[J].地理学报,1981,36(1):70-78.
[15] 李智佩,岳乐平,薛祥煦,等.毛乌素沙地东南部边缘不同地质成因类型土地沙漠化粒度特征及其地质意义[J].沉积学报,2006,24(2):267-275.
[16] 李占宏,海春兴,从艳静,等.毛乌素沙地表土粒度特征及其空间变异[J].中国水土保持科学,2009,7(2):74-79.
[17] 哈斯,庄燕美,王蕾,等.毛乌素沙地南缘横向沙丘粒度分布及其对风向变化的响应[J].地理科学进展,2006,25(6):42-51.
[18] 刘海霞,李晋昌,苏志珠,等.毛乌素沙地西南缘灌丛沙丘沉积物的粒度和元素特征[J].中国沙漠,2015,35(1):24-31.
[19] 吴正.中国沙漠及其治理[M].北京:科学出版社,2009.
[20] Folk P L,Ward W D.Brazos reviver bar:a study in the significance of grain size parameters[J].Journal of Sedimentary Petrology,1957,27(1):3-26.
[21] Krumbein W C.Aberdeen E.The sediments of Barataria Bay[J].Journal of Sedimentary Petrology,1937,7(1):3-17.
[22] Zhu B Q,Yu J J,Rioual P,et al.Particle size variation of aeolian dune deposits in the lower reaches of the Heihe River basin,China[J].Sedimentary Geology,2014,301:54-69.
[23] Lancaster N.Grain-size characteristics of linear dunes in the southwestern Kalahari.[J] Journal of Sedimentary Research,1986,56(3):395-400.
[24] Lancaster N.Grain size characteristics of Namib Desert linear dunes[J].Sedimentology,1981,28(1):115-122.
[25] Ahlbrandt T S.Textural parameters of aeolian deposits[M]//McKee E D.A Study of Global Sand Seas.US Geological Survey Professional Paper.Washington,USA,1979.
[26] Folk R L.Longitudinal dunes of the northwestern edge of the Simpson Desert,Northern Territory,Australia:1.Geomorphology and grain size relationships[J].Sedimentology,1971,16(12):54.
[27] Goudie A S,Allchin B,Hegde K T M.The former extensions of the great Indian Sand Desert[J].The Geographical Journal,1973,139(2):243-257.
[28] Tsoar H.The dynamics of longitudinal dunes[R].Washington,USA:US Army European Research Office,1978.
[29] 拜格诺 R A.风沙与荒漠沙漠物理学[M].钱宁,林秉南,译.北京:科学出版社,1959.
[30] 董光荣,李保生,高尚玉.由萨拉乌苏河地层看晚更新世以来毛乌素沙漠的变迁[J].中国沙漠,1983,3(2):13-18.
[31] Li B S,Zhang D D,Jin H L,et al.Paleo-monsoon activities of Mu Us Desert,China since 150 ka BP-a study of the stratigraphic sequences of the Milanggouwan Section,Salawusu River area[J].Palaeogeography Palaeoclimatology Palaeoecology,2000,162(1):1-16.
[32] 欧先交,李保生,靳鹤龄,等.萨拉乌苏河流域萨拉乌苏组沙丘沙沉积特征[J].地理学报,2006,61(9):965-975.
[33] Stevens T,Carter A,Watson T P,et al.Genetic linkage between the Yellow River,the Mu Us desert and the Chinese Loess Plateau[J].Quaternary Science Reviews,2013,78:355-368.
[34] 成都地质学院陕北队.沉积岩(物)粒度分析及其应用[M].北京:地质出版社,1978.