湘江流域土壤重金属元素地球化学背景值与基准值研究
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鲁江, 朱丽芬, 骆检兰, 刘显丽
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Geochemical background and baseline values of heavy metals in soils in the Xiangjiang River Basin
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LU Jiang, ZHU Li-Fen, LUO Jian-Lan, LIU Xian-Li
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表8 湘江流域土壤类型子区土壤基准值和背景值
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Table 8 Soil reference value and background value of soil type sub-region in Xiangjiang River Basin
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| 土壤类型 | 潮土 | 粗骨土 | 红壤 | 红黏土 | 黄壤 | 黄棕壤 | 山地草甸土 | 石灰土 | 水稻土 | 紫色土 | 样本 数 | 背景值/10-6 | 16 | 90 | 9311 | 10 | 1169 | 575 | 56 | 509 | 5191 | 995 | | 基准值/10-6 | 4 | 22 | 2328 | 3 | 292 | 143 | 14 | 127 | 1297 | 248 | | As | 背景值/10-6 | 26.80 | 9.08 | 13.50 | 17.09 | 12.51 | 13.98 | 13.13 | 15.70 | 13.79 | 9.52 | | 基准值/10-6 | 26.64 | 8.66 | 13.36 | 13.43 | 13.70 | 15.64 | 14.49 | 16.34 | 13.30 | 8.63 | | 比值 | 1.01 | 1.05 | 1.01 | 1.27 | 0.91 | 0.89 | 0.91 | 0.96 | 1.04 | 1.10 | | Cd | 背景值/10-6 | 0.76 | 0.38 | 0.36 | 0.55 | 0.22 | 0.19 | 0.18 | 0.44 | 0.40 | 0.40 | | 基准值/10-6 | 0.08 | 0.10 | 0.14 | 0.08 | 0.12 | 0.11 | 0.11 | 0.20 | 0.14 | 0.15 | | 比值 | 9.50 | 3.78 | 2.54 | 7.08 | 1.87 | 1.67 | 1.60 | 2.22 | 2.88 | 2.67 | | Cr | 背景值/10-6 | 81.00 | 62.55 | 79.00 | 91.00 | 66.90 | 68.20 | 39.60 | 88.30 | 82.30 | 68.80 | | 基准值/10-6 | 83.00 | 49.85 | 79.00 | 82.70 | 72.00 | 72.30 | 54.10 | 88.10 | 79.50 | 67.40 | | 比值 | 0.98 | 1.25 | 1.00 | 1.10 | 0.93 | 0.94 | 0.73 | 1.00 | 1.04 | 1.02 | | Cu | 背景值/10-6 | 33.10 | 27.75 | 29.00 | 30.55 | 26.00 | 26.80 | 23.00 | 32.15 | 29.90 | 28.40 | | 基准值/10-6 | 31.50 | 19.90 | 26.00 | 21.70 | 25.00 | 25.50 | 24.00 | 30.00 | 25.30 | 24.30 | | 比值 | 1.05 | 1.39 | 1.12 | 1.41 | 1.04 | 1.05 | 0.96 | 1.07 | 1.18 | 1.17 | | Hg | 背景值/10-6 | 0.16 | 0.11 | 0.13 | 0.14 | 0.12 | 0.14 | 0.13 | 0.16 | 0.14 | 0.09 | | 基准值/10-6 | 0.14 | 0.05 | 0.10 | 0.08 | 0.11 | 0.12 | 0.13 | 0.14 | 0.08 | 0.06 | | 比值 | 1.16 | 2.24 | 1.40 | 1.74 | 1.13 | 1.14 | 0.99 | 1.18 | 1.69 | 1.47 | | Ni | 背景值/10-6 | 26.90 | 20.70 | 28.30 | 24.50 | 26.00 | 25.50 | 20.05 | 33.00 | 28.57 | 25.31 | | 基准值/10-6 | 27.60 | 18.40 | 30.30 | 23.70 | 27.80 | 28.05 | 19.60 | 37.20 | 29.50 | 25.20 | | 比值 | 0.97 | 1.13 | 0.93 | 1.03 | 0.94 | 0.91 | 1.02 | 0.89 | 0.97 | 1.00 | | Pb | 背景值/10-6 | 56.80 | 50.95 | 39.50 | 37.85 | 40.50 | 42.40 | 49.00 | 41.60 | 39.80 | 36.00 | | 基准值/10-6 | 34.40 | 40.40 | 31.00 | 23.90 | 36.00 | 36.00 | 35.00 | 34.80 | 30.10 | 26.50 | | 比值 | 1.65 | 1.26 | 1.27 | 1.58 | 1.13 | 1.18 | 1.40 | 1.20 | 1.32 | 1.36 | | Zn | 背景值/10-6 | 128.00 | 90.00 | 92.00 | 87.00 | 87.00 | 84.00 | 84.50 | 104.00 | 93.00 | 81.00 | | 基准值/10-6 | 84.00 | 76.45 | 84.00 | 63.50 | 87.70 | 84.10 | 81.50 | 97.35 | 80.50 | 66.90 | | 比值 | 1.52 | 1.18 | 1.10 | 1.37 | 0.99 | 1.00 | 1.04 | 1.07 | 1.16 | 1.21 | | pH | 背景值 | 6.94 | 5.38 | 5.59 | 6.53 | 5.05 | 4.97 | 5.15 | 7.18 | 6.21 | 6.74 | | 基准值 | 6.67 | 6.76 | 6.65 | 5.96 | 5.40 | 5.17 | 5.59 | 7.49 | 6.98 | 7.09 | | 比值 | 1.04 | 0.80 | 0.84 | 1.09 | 0.94 | 0.96 | 0.92 | 0.96 | 0.89 | 0.95 |
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