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[1]HUO Wen,HE Qing,YANG Xing-hua,et al.The Research on Grain Size Characteristic of Desert in North of China[J].Research of Soil and Water Conservation,2011,18(06):6-11.

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The Research on Grain Size Characteristic of Desert in North of China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 06 Page number: 6-11 Column: Public date: 2011-12-20

Title:: The Research on Grain Size Characteristic of Desert in North of China

Author(s):: HUO Wen¹, HE Qing¹, YANG Xing-hua¹, LIU Xing-chun¹, DING Guo-feng², CHENG Yu-jing³; 1. Institute of Desert and Meteorology, CMA, Urumqi 830002, China;
2. Hejing County Baygnbulak Weather Station, Baygnbulak, Xinjiang 841314, China;
3. Korla Meteorological Bureau, Korla, Xinjiang 841000, China

Keywords:: desert; mean grain size; standard deviation; skewness; kurtosis

CLC:: P425.5⁺5

DOI:: -

Abstract:: Analysis on grain size of the sediment is very important to differentiate sedimentary environments, determinate the ways of sediment transport, estimate hydrodynamic conditions and analyze grain size trends. Grain size parameters of sand dust in Taklimakan Desert, Kumtag Desert, Badain Jaran Desert, Tengger Desert and Mu Us Sandland were analyzed and compared. The results showed that during sandy and dust weather, the mean grain size values and standard deviation of Tazhong were 2.95～3.95 and 0.03～0.98, respectively, however, those of Xiaotang transition zone were 2.93～4.56 and 0.01～0.1, respectively. The kurtosis value of Xiaotang desert transition zone was higher, and that of Tazhong desert district was lower. The mean grain size values, standard deviation, skewness and kurtosis were 1.55~2.92, 0.41~1.11, 0.11~0.31 and 0.77~1.23, respectively. Mean values of grain size in Badain Jaran Desert, Mu Us Sandland, Tengger Desert and Kubuqi Desert were 1.6~1.8, 1.7~2.0, 1.7~2.3 and 2.1~2.4, respectively. The standard deviation of Kubuqi Desert was the lowest, 0.46~0.51, while the value of Badain Jaran Desert was 0.55～0.68,0.41～0.65 for Tengger Desert, 0.81～0.91 for Mu Us Sandland. Most samples of Tengger Desert positively deviated, while the samples of Badain Jaran Desert and Mu Us Sandland negatively deviated. The orders in lower size to mean grain size were Xiaotang, Tazhong, Kumtag Desert, Kubuqi Desert, Tengger Desert, Mu Us Sandland and Badain Jaran Desert. The orders in higher value to standard deviation were Xiaotang, with the worst sorting features, Mu Us Sandland, Taklimakan Desert, Kumtag Desert, Tengger Desert, Badain Jaran Desert, Kubuqi Desert, with the best sorting features. The distribution frequency shapes reflected that there was more fine silt in Xiaotang, Kumtag Desert and Kubuqi Desert and here was more coarse silt in Taklimakan Desert, Mu Us Sandland, Tengger Desert and Badain Jaran Desert.

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