| 中国主要沙尘暴源区稳定同位素背景值初步研究 |
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| 引用本文： | 杜宏印,郭浩,崔向慧,芦霞,辛智鸣.中国主要沙尘暴源区稳定同位素背景值初步研究[J].中国沙漠,2016,36(3):604-609. |
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| 作者姓名： | 杜宏印 郭浩 崔向慧 芦霞 辛智鸣 |
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| 作者单位： | 1. 中国林业科学研究院 荒漠化研究所, 北京 100091;2. 江西农业大学 园林与艺术学院, 江西 南昌 330045;3. 中国林业科学研究院 沙漠林业实验中心, 内蒙古 磴口 015200 |
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| 基金项目： | 国家自然科学基金项目(41371500);引进国际先进林业科学技术项目(2012-4-77) |
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| 摘 要： | 采用稳定同位素方法,对中国沙尘暴主要源区塔克拉玛干沙漠、柴达木盆地沙漠、库姆塔格沙漠、腾格里沙漠、乌兰布和沙漠、毛乌素沙地进行了采样分析。结果表明:22个样品18O和30Si的δ值变化范围分别为9.6~14.8和-1.7~0.3,其中18O的δ值库姆塔格沙漠最大,柴达木盆地沙漠最小,30Si的δ值毛乌素沙地最大,柴达木盆地沙漠最小。总体而言,样品中30Si的δ值的变异系数要比18O的δ的变异系数大,因此30Si更适合用于沙尘溯源。相邻的沙漠(沙地)呈现出30Si的δ值相近的趋势,因此推断相邻的沙漠(沙地)沉积物可能来自同一地区。
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| 关 键 词： | 沙尘暴 稳定同位素 溯源 背景值 |
| 收稿时间： | 2015-07-31 |
| 修稿时间： | 2015-09-26 |
The Stable Isotope Background Values of the Major Source Regions of Dust Storms in China |
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| Du Hongyin,Guo Hao,Cui Xianghui,Lu Xia,Xin Zhiming.The Stable Isotope Background Values of the Major Source Regions of Dust Storms in China[J].Journal of Desert Research,2016,36(3):604-609. |
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| Authors: | Du Hongyin Guo Hao Cui Xianghui Lu Xia Xin Zhiming |
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| Institution: | 1. Desertification Research Institute, Chinese Academy of Forestry, Beijing 100091, China;2. College of Landscape and Art, Jiangxi Agricultural University, Nanchang 330045, China;3. Experimental Center of Desert Forestry, Chinese Academy of Forestry, Dengkou 015200, Inner Mongolia, China |
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| Abstract: | By using stable isopote analysis method, we research the stable isotope background values of samples of Taklimakan Desert, Qaidam Basin Desert, Kumtagh Desert, Tengger Desert, Ulan Buh Desert, Mu Us Sandy Land which are the major dust storm source regions in China. The results show that the δ values of 18O and 30Si of 22 samples range at 9.6-14.8 and -1.7-0.3, respectively. The δ value of 18O from is the maximum in the Kumtagh Desert, and it is the minimum in the Qaidam Basin Desert. The δ value of 30Si value is maximum in the Mu Us Sandy Land, and is minimum in the Qaidam Basin Desert. Overall, the variation coefficients of δ value of 30Si are greater than the variation coefficient of δ values of 18O. So, 30Si is more suitable for dust storm source research. Furthermore, the adjacent deserts showed a similar trend of 30Si. Therefore, it is inferred that the sediments of adjacent deserts may come from the same area. |
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| Keywords: | dust storm stable isotope trace ability background value |
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