浅山区典型小流域土壤重金属影响因素及来源分析
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史敬涛, 刘俊建, 张军超, 王江玉龙, 姜禹戈, 王末, 李横飞, 杨文号, 颜翔锦
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Analysis of soil heavy metal influencing factors and sources in typical small watersheds in shallow mountainous area
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SHI Jing-Tao, LIU Jun-Jian, ZHANG Jun-Chao, WANG Jiang-Yu-Long, JIANG Yu-Ge, WANG Mo, LI Heng-Fei, YANG Wen-Hao, YAN Xiang-Jin
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表1 表层、深层土壤及成土母岩中重金属元素的含量及相应统计参数
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Table 1 The content of heavy metals in surface and deep soils and matrixes and corresponding statistical parameters
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| 项目 | 统计参数 | Cr | Ni | Cu | Zn | Cd | Pb | Hg | As | | 表层土壤 | 最大值 | 1374.0 | 369.0 | 192.0 | 172.0 | 2.070 | 57.2 | 0.221 | 33.7 | | 最小值 | 14.6 | 11.6 | 4.9 | 11.2 | 0.050 | 9.3 | 0.011 | 2.1 | | 平均值 | 86.1 | 37.3 | 30.9 | 82.3 | 0.199 | 26.5 | 0.040 | 9.9 | | 标准差 | 159.1 | 44.1 | 26.3 | 26.1 | 0.280 | 7.4 | 0.034 | 5.5 | | 变异系数/% | 184.7 | 118.1 | 85.0 | 31.7 | 140.4 | 27.9 | 87.0 | 55.2 | | 深层土壤 | 最大值 | 1975.0 | 443.0 | 234.0 | 219.0 | 3.190 | 53.2 | 0.290 | 30.5 | | 最小值 | 8.8 | 3.4 | 1.1 | 4.5 | 0.018 | 6.0 | 0.005 | 1.0 | | 平均值 | 96.5 | 39.4 | 33.1 | 84.8 | 0.207 | 25.1 | 0.033 | 9.0 | | 标准差 | 238.6 | 53.2 | 35.6 | 29.3 | 0.453 | 5.9 | 0.045 | 5.5 | | 变异系数/% | 247.4 | 134.8 | 107.6 | 34.6 | 218.8 | 23.6 | 138.2 | 61.2 | | 成土母岩 | 最大值 | 2542.0 | 652.0 | 307.0 | 350.0 | 3.250 | 59.7 | 4.124 | 116.7 | | 最小值 | 6.5 | 2.2 | 1.0 | 2.9 | 0.028 | 5.2 | 0.004 | 0.4 | | 平均值 | 85.1 | 34.6 | 27.5 | 72.4 | 0.229 | 21.6 | 0.101 | 6.3 | | 标准差 | 320.7 | 84.0 | 52.3 | 64.1 | 0.530 | 10.2 | 0.528 | 17.0 | | 变异系数/% | 376.7 | 242.6 | 190.2 | 88.4 | 231.7 | 47.3 | 520.9 | 269.0 | | 背景值[16] | 河北省表层 | 68,3 | 30.8 | 21.8 | 78.4 | 0.094 | 21.5 | 0.036 | 13.6 | | 河北省深层 | 72.6 | 34.1 | 23.0 | 78.4 | 0.097 | 25.1 | 0.022 | 14.2 |
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