新疆若羌县农用地表层土壤硒氟碘地球化学特征
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马常莲, 周金龙, 曾妍妍, 任贵兵, 王松涛
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Geochemical characteristics of selenium, fluorine, iodine in surface soil of the agricultural land in Ruoqiang County, Xinjiang
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MA Chang-Lian, ZHOU Jin-Long, ZENG Yan-Yan, REN Gui-Bing, WANG Song-Tao
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表4 研究区不同成土母质区表层土壤Se、F、I含量特征
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Table 4 Content characteristics of Se, F and I in soils derived from different parent materials
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| 元素 | 特征值 | 成土母质 | 冲积物
(n=24) | 冲积洪积物
(n=22) | 风积物
(n=90) | 洪积物
(n=6) | | Se | 极大值/10-6 | 0.26 | 0.40 | 0.56 | 0.91 | | 极小值/10-6 | 0.08 | 0.08 | 0.06 | 0.11 | | 平均值/10-6 | 0.15 | 0.19 | 0.25 | 0.36 | | 标准差/10-6 | 0.05 | 0.09 | 0.11 | 0.27 | | 变异系数/% | 33.3 | 47.4 | 44.0 | 75.0 | | F | 极大值/10-6 | 878 | 841 | 952 | 896 | | 极小值/10-6 | 464 | 397 | 386 | 551 | | 平均值/10-6 | 635 | 628 | 648 | 705 | | 标准差/10-6 | 160.39 | 163.56 | 128.41 | 266.43 | | 变异系数/% | 25.3 | 26.0 | 19.8 | 37.8 | | I | 极大值/10-6 | 1.90 | 1.80 | 1.70 | 1.90 | | 极小值/10-6 | 0.56 | 0.44 | 0.51 | 0.72 | | 平均值/10-6 | 1.08 | 0.99 | 1.06 | 1.19 | | 标准差/10-6 | 0.01 | 0.36 | 0.31 | 0.37 | | 变异系数/% | 0.9 | 36.4 | 29.2 | 31.1 |
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