河西走廊酒东沙地风沙沉积物理化特征及其环境意义
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郭雪阳, 杨林海, 程良清, 胡光印, 胡菁菁
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Physical and chemical characteristics of aeolian sands in Jiudong Sandy Land of Hexi Corridor and its environmental significance
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Xueyang Guo, Linhai Yang, Liangqing Cheng, Guangyin Hu, Jingjing Hu
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表2 酒东沙地及邻近沙漠表层风沙沉积物微量元素含量（μg·g-1 ）
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Table 2 Trace element contents of aeolian sand sediments on the surface of Jiudong Sandy Land and adjacent deserts in China （μg·g-1 ）
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| 元素 | 变化范围 | 平均值 | 标准差 | 变异系数 | 背景值 | 巴丹吉林沙漠 | 腾格里沙漠 |
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| Ba | 458.2~507.4 | 474.3 | 13.8 | 0.03 | 550.0 | 544.5 | 619.61 | | Sr | 136.1~196.0 | 165.3 | 20.0 | 0.12 | 350.0 | 168.1 | 171.77 | | Cr | 40.2~356.8 | 175.8 | 91.9 | 0.52 | 35.0 | 105.1 | 95.53 | | Zr | 72.9~147.9 | 93.6 | 22.2 | 0.24 | 190.0 | 89.5 | 105.13 | | Rb | 51.4~66.1 | 57.7 | 4.4 | 0.08 | 112.0 | 62.8 | 70.69 | | V | 38.9~76.2 | 52.0 | 10.5 | 0.20 | 60.0 | — | — | | Co | 4.1~107.3 | 29.8 | 37.5 | 1.26 | 10.0 | 124.1 | 121.23 | | Zn | 21.6~39.0 | 29.4 | 5.1 | 0.17 | 71.0 | — | — | | La | 11.0~26.0 | 16.5 | 4.3 | 0.26 | 30.0 | — | — | | Pb | 11.6~13.7 | 12.8 | 0.6 | 0.05 | 15.0 | — | — | | Cu | 11.6~16.4 | 13.6 | 1.5 | 0.11 | 25.0 | 13.8 | 12.67 | | Y | 12.1~18.7 | 14.4 | 2.1 | 0.15 | 22.0 | — | — | | Ga | 8.9~10.7 | 9.7 | 0.7 | 0.07 | 17.0 | 10.7 | 11.13 | | Ni | 18.9~37.4 | 26.6 | 5.0 | 0.19 | 20.0 | 18.2 | 16.65 | | Nb | 6.3~11.1 | 7.9 | 1.5 | 0.19 | 25.0 | — | — | | Bi | 5.8~5.8 | 5.8 | 0.0 | 0.00 | 127.0 | — | — |
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