东北平原区地块尺度土地质量地球化学评价合理采样密度研究
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彭敏, 李括, 刘飞, 唐世琪, 马宏宏, 杨柯, 杨峥, 郭飞, 成杭新
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Reasonable sampling density for land parcel scale geochemical assessment on land quality in Northeast China Plain
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Min PENG, Kuo LI, Fei LIU, Shi-Qi TANG, Hong-Hong MA, Ke YANG, Zheng YANG, Fei GUO, Hang-Xin CHENG
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表2 公主岭市大岭地区土壤元素含量统计参数及合理取样数
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Table 2 Statistical parameters of elements concentration in soil samples and reasonable sampling size for the study area
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指标 | 单位 | 样品数 | 最小值 | 最大值 | 平均值 | 标准差 | 变异系数 | n | As | 10-6 | 1236 | 5.63 | 33.76 | 11.11 | 1.84 | 16.6% | 2 | B | 10-6 | 1236 | 13.39 | 139.78 | 43.41 | 7.88 | 18.1% | 2 | Cd | 10-9 | 1236 | 35.81 | 707.63 | 175.29 | 61.93 | 35.3% | 6 | Cl | 10-6 | 1236 | 45.90 | 1411.80 | 109.70 | 97.48 | 88.9% | 34 | Co | 10-6 | 1236 | 7.67 | 30.87 | 14.63 | 3.26 | 22.3% | 3 | Cr | 10-6 | 1236 | 50.80 | 87.40 | 64.51 | 4.47 | 6.9% | 1 | Cu | 10-6 | 1236 | 17.33 | 59.06 | 22.66 | 2.21 | 9.8% | 1 | F | 10-6 | 1236 | 346.89 | 862.25 | 476.79 | 39.82 | 8.4% | 1 | Ge | 10-6 | 1236 | 0.83 | 1.77 | 1.32 | 0.13 | 9.6% | 1 | Hg | 10-9 | 1236 | 3.16 | 1333.03 | 45.85 | 62.65 | 136.6% | 80 | I | 10-6 | 1236 | 0.91 | 6.05 | 2.73 | 0.59 | 21.5% | 2 | Mn | 10-6 | 1236 | 232.61 | 2393.36 | 873.10 | 335.03 | 38.4% | 7 | Mo | 10-6 | 1236 | 0.30 | 1.92 | 0.51 | 0.12 | 22.5% | 3 | N | 10-6 | 1236 | 326.21 | 3536.15 | 1717.95 | 272.24 | 15.8% | 2 | Ni | 10-6 | 1236 | 20.03 | 55.83 | 28.91 | 3.11 | 10.7% | 1 | P | 10-6 | 1236 | 371.42 | 2180.34 | 853.03 | 194.72 | 22.8% | 3 | Pb | 10-6 | 1236 | 20.52 | 185.26 | 27.06 | 5.83 | 21.5% | 2 | S | 10-6 | 1236 | 101.17 | 1217.25 | 342.40 | 102.86 | 30.0% | 4 | Se | 10-6 | 1236 | 0.06 | 0.51 | 0.22 | 0.04 | 19.0% | 2 | Zn | 10-6 | 1236 | 45.74 | 453.58 | 63.54 | 12.40 | 19.5% | 2 | SiO2 | % | 1236 | 45.81 | 65.97 | 62.52 | 2.02 | 3.2% | 1 | Al2O3 | % | 1236 | 9.72 | 16.68 | 14.39 | 0.66 | 4.6% | 1 | TFe2O3 | % | 1236 | 3.26 | 5.88 | 4.37 | 0.29 | 6.7% | 1 | MgO | % | 1236 | 0.79 | 1.94 | 1.32 | 0.14 | 10.3% | 1 | CaO | % | 1236 | 0.92 | 8.78 | 2.02 | 1.04 | 51.7% | 12 | Na2O | % | 1236 | 1.28 | 3.55 | 1.91 | 0.18 | 9.5% | 1 | K2O | % | 1236 | 1.68 | 3.12 | 2.42 | 0.08 | 3.5% | 1 | Corg | % | 1236 | 0.24 | 4.59 | 1.62 | 0.29 | 18.1% | 2 | pH | 无量纲 | 1236 | 4.83 | 9.25 | 6.96 | 1.08 | 15.6% | 2 |
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