Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (2): 142-154.DOI: 10.7522/j.issn.1000-694X.2024.00106
Zelong Li1,2(), Gen Wang1(
), Yongli Wang3, Zhifu Wei1, Ting Zhang1, Xueyun Ma1, Xiaomei Zhang1,2, Jianzhen Chen1,2, Baoxiang Wu1, Yingqin Wu1, Xiaoguang Qin3
Received:
2024-10-17
Revised:
2024-11-27
Online:
2025-03-20
Published:
2025-01-13
Contact:
Gen Wang
CLC Number:
Zelong Li, Gen Wang, Yongli Wang, Zhifu Wei, Ting Zhang, Xueyun Ma, Xiaomei Zhang, Jianzhen Chen, Baoxiang Wu, Yingqin Wu, Xiaoguang Qin. Pollution characteristics,ecological risk assessment,and source analysis of heavy metals in the coal mining areas of Hami, Xinjiang, China[J]. Journal of Desert Research, 2025, 45(2): 142-154.
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URL: http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2024.00106
矿区 | 采样点位置信息 | 采样区域 | 采样数 /个 | |
---|---|---|---|---|
经度(E)/(°) | 纬度(N)/(°) | |||
巴里坤 | 别斯库都克、吉郎德、黑眼泉等煤矿与天顺矿业等煤炭企业周边以及交通线路附近 | 91.89—92.31 | 44.24—44.41 | 40 |
淖毛湖 | 广汇白石湖露天煤矿、淖毛湖镇与附近工业园区、交通线路周边 | 94.21—95.03 | 43.71—43.96 | 9 |
三道岭 | 三道岭露天煤矿区、三道岭镇、附近煤炭企业、沿途交通线路周边 | 92.46—92.67 | 43.11—43.17 | 17 |
沙尔湖 | 沙尔湖煤矿及运煤道路周边 | 91.48—91.94 | 42.59—42.68 | 3 |
大南湖 | 大南湖二矿、煤炭企业、S235哈密-若羌段交通线周边,中煤哈密与运煤道路周边,中煤红星、徐矿集团等煤炭企业及周边灰场 | 92.96—93.72 | 42.27—42.47 | 33 |
野马泉 | 野马泉煤矿核心区、过渡区、自然背景区 | 95.24—95.27 | 42.32—42.36 | 5 |
Table 1 Basic information on the location of the sampling points of the study area
矿区 | 采样点位置信息 | 采样区域 | 采样数 /个 | |
---|---|---|---|---|
经度(E)/(°) | 纬度(N)/(°) | |||
巴里坤 | 别斯库都克、吉郎德、黑眼泉等煤矿与天顺矿业等煤炭企业周边以及交通线路附近 | 91.89—92.31 | 44.24—44.41 | 40 |
淖毛湖 | 广汇白石湖露天煤矿、淖毛湖镇与附近工业园区、交通线路周边 | 94.21—95.03 | 43.71—43.96 | 9 |
三道岭 | 三道岭露天煤矿区、三道岭镇、附近煤炭企业、沿途交通线路周边 | 92.46—92.67 | 43.11—43.17 | 17 |
沙尔湖 | 沙尔湖煤矿及运煤道路周边 | 91.48—91.94 | 42.59—42.68 | 3 |
大南湖 | 大南湖二矿、煤炭企业、S235哈密-若羌段交通线周边,中煤哈密与运煤道路周边,中煤红星、徐矿集团等煤炭企业及周边灰场 | 92.96—93.72 | 42.27—42.47 | 33 |
野马泉 | 野马泉煤矿核心区、过渡区、自然背景区 | 95.24—95.27 | 42.32—42.36 | 5 |
污染程度分级 | |||
---|---|---|---|
无 | |||
1< | 1< | 0< | 轻度 |
2< | 2< | 1< | 中度 |
3< | 重度 | ||
极重度 |
Table 2 Evaluation methods and classification standards for heavy metal pollution
污染程度分级 | |||
---|---|---|---|
无 | |||
1< | 1< | 0< | 轻度 |
2< | 2< | 1< | 中度 |
3< | 重度 | ||
极重度 |
生态危害程度分级 | ||
---|---|---|
轻微 | ||
40< | 150< | 中度 |
80< | 300< | 强 |
160< | 极强 | |
Table 3 Criterian of potential ecological risk assessment
生态危害程度分级 | ||
---|---|---|
轻微 | ||
40< | 150< | 中度 |
80< | 300< | 强 |
160< | 极强 | |
项目 | As | Cd | Co | Cr | Cu | Mn | Ni | Pb | Zn | Fe | |
---|---|---|---|---|---|---|---|---|---|---|---|
大 南 湖 水 样 | 最大值/(mg·L-1) | 7.40 | 2.86 | 2.69 | 1.61 | 3.57 | 17.55 | 2.47 | 3.38 | 1.16 | 2.56 |
最小值/(mg·L-1) | 0.00 | 1.91 | 2.45 | 1.47 | 2.75 | 2.87 | 2.14 | 2.06 | 0.40 | 1.94 | |
平均值/(mg·L-1) | 3.32 | 2.21 | 2.57 | 1.56 | 3.15 | 4.75 | 2.31 | 2.62 | 0.61 | 2.19 | |
标准差/(mg·L-1) | 2.70 | 0.29 | 0.07 | 0.05 | 0.25 | 4.84 | 0.11 | 0.43 | 0.24 | 0.18 | |
变异系数 | 0.81 | 0.13 | 0.03 | 0.03 | 0.08 | 1.02 | 0.05 | 0.16 | 0.39 | 0.08 | |
巴 里 坤 水 样 | 最大值/(mg·L-1) | 8.05 | 1.96 | 2.66 | 1.60 | 3.58 | 3.11 | 2.45 | 3.37 | 0.83 | 2.14 |
最小值/(mg·L-1) | 0.00 | 1.90 | 2.46 | 1.48 | 2.79 | 2.87 | 2.23 | 1.71 | 0.59 | 2.02 | |
平均值/(mg·L-1) | 3.54 | 1.93 | 2.58 | 1.56 | 3.28 | 2.91 | 2.37 | 2.58 | 0.70 | 2.10 | |
标准差/(mg·L-1) | 2.52 | 0.02 | 0.07 | 0.04 | 0.28 | 0.08 | 0.07 | 0.58 | 0.07 | 0.05 | |
变异系数 | 0.71 | 0.01 | 0.03 | 0.02 | 0.09 | 0.03 | 0.03 | 0.22 | 0.10 | 0.02 | |
植 物 | 最大值/(mg·kg-1) | 4.15 | 4.14 | 3.07 | 10.25 | 10.23 | 127.09 | 9.46 | 4.14 | 76.47 | 1 530.83 |
最小值/(mg·kg-1) | 0.00 | 1.26 | 1.40 | 4.37 | 3.54 | 10.47 | 2.06 | 1.39 | 4.10 | 139.45 | |
平均值/(mg·kg-1) | 1.67 | 2.89 | 2.48 | 7.25 | 8.14 | 50.19 | 4.06 | 2.71 | 17.51 | 767.38 | |
标准差/(mg·kg-1) | 1.19 | 0.86 | 0.48 | 1.70 | 1.69 | 35.88 | 1.64 | 0.73 | 16.51 | 385.28 | |
变异系数 | 0.71 | 0.30 | 0.19 | 0.23 | 0.21 | 0.71 | 0.40 | 0.27 | 0.96 | 0.50 |
Table 4 Statistical table of heavy metal content in water bodies and plants around typical coal mine areas in Hami
项目 | As | Cd | Co | Cr | Cu | Mn | Ni | Pb | Zn | Fe | |
---|---|---|---|---|---|---|---|---|---|---|---|
大 南 湖 水 样 | 最大值/(mg·L-1) | 7.40 | 2.86 | 2.69 | 1.61 | 3.57 | 17.55 | 2.47 | 3.38 | 1.16 | 2.56 |
最小值/(mg·L-1) | 0.00 | 1.91 | 2.45 | 1.47 | 2.75 | 2.87 | 2.14 | 2.06 | 0.40 | 1.94 | |
平均值/(mg·L-1) | 3.32 | 2.21 | 2.57 | 1.56 | 3.15 | 4.75 | 2.31 | 2.62 | 0.61 | 2.19 | |
标准差/(mg·L-1) | 2.70 | 0.29 | 0.07 | 0.05 | 0.25 | 4.84 | 0.11 | 0.43 | 0.24 | 0.18 | |
变异系数 | 0.81 | 0.13 | 0.03 | 0.03 | 0.08 | 1.02 | 0.05 | 0.16 | 0.39 | 0.08 | |
巴 里 坤 水 样 | 最大值/(mg·L-1) | 8.05 | 1.96 | 2.66 | 1.60 | 3.58 | 3.11 | 2.45 | 3.37 | 0.83 | 2.14 |
最小值/(mg·L-1) | 0.00 | 1.90 | 2.46 | 1.48 | 2.79 | 2.87 | 2.23 | 1.71 | 0.59 | 2.02 | |
平均值/(mg·L-1) | 3.54 | 1.93 | 2.58 | 1.56 | 3.28 | 2.91 | 2.37 | 2.58 | 0.70 | 2.10 | |
标准差/(mg·L-1) | 2.52 | 0.02 | 0.07 | 0.04 | 0.28 | 0.08 | 0.07 | 0.58 | 0.07 | 0.05 | |
变异系数 | 0.71 | 0.01 | 0.03 | 0.02 | 0.09 | 0.03 | 0.03 | 0.22 | 0.10 | 0.02 | |
植 物 | 最大值/(mg·kg-1) | 4.15 | 4.14 | 3.07 | 10.25 | 10.23 | 127.09 | 9.46 | 4.14 | 76.47 | 1 530.83 |
最小值/(mg·kg-1) | 0.00 | 1.26 | 1.40 | 4.37 | 3.54 | 10.47 | 2.06 | 1.39 | 4.10 | 139.45 | |
平均值/(mg·kg-1) | 1.67 | 2.89 | 2.48 | 7.25 | 8.14 | 50.19 | 4.06 | 2.71 | 17.51 | 767.38 | |
标准差/(mg·kg-1) | 1.19 | 0.86 | 0.48 | 1.70 | 1.69 | 35.88 | 1.64 | 0.73 | 16.51 | 385.28 | |
变异系数 | 0.71 | 0.30 | 0.19 | 0.23 | 0.21 | 0.71 | 0.40 | 0.27 | 0.96 | 0.50 |
矿区 | As /(mg·kg-1) | Co /(mg·kg-1) | Cr /(mg·kg-1) | Cu /(mg·kg-1) | Mn /(mg·kg-1) | Ni /(mg·kg-1) | Pb /(mg·kg-1) | Zn /(mg·kg-1) | Fe /% | |
---|---|---|---|---|---|---|---|---|---|---|
大南湖 矿区 (n=22) | 最大值 | 55.98 | 25.20 | 91.26 | 74.52 | 705.60 | 41.58 | 24.12 | 93.42 | 17.14 |
最小值 | 6.89 | 0.13 | 2.86 | 1.55 | 0.00 | 3.26 | 0.00 | 6.88 | 4.10 | |
平均值 | 30.74 | 13.61 | 46.50 | 27.49 | 431.67 | 23.59 | 6.53 | 45.53 | 11.68 | |
标准差 | 11.32 | 6.00 | 20.52 | 16.74 | 186.60 | 10.67 | 5.31 | 19.76 | 3.70 | |
变异系数 | 0.37 | 0.44 | 0.44 | 0.61 | 0.43 | 0.45 | 0.81 | 0.43 | 0.32 | |
三道岭 矿区 (n=10) | 最大值 | 50.04 | 24.12 | 77.04 | 66.60 | 748.80 | 40.14 | 36.36 | 157.32 | 2.25 |
最小值 | 1.46 | 12.87 | 27.36 | 27.90 | 390.60 | 25.20 | 4.30 | 70.92 | 1.09 | |
平均值 | 29.94 | 18.22 | 54.04 | 38.41 | 543.24 | 33.16 | 12.80 | 95.65 | 1.65 | |
标准差 | 14.56 | 2.91 | 15.13 | 10.78 | 119.27 | 4.87 | 8.69 | 26.12 | 0.41 | |
变异系数 | 0.49 | 0.16 | 0.28 | 0.28 | 0.22 | 0.15 | 0.68 | 0.27 | 0.25 | |
巴里坤 矿区 (n=28) | 最大值 | 84.24 | 25.92 | 143.10 | 61.92 | 1 404.00 | 61.02 | 23.94 | 1591.20 | 1.77 |
最小值 | 6.73 | 10.55 | 12.26 | 20.34 | 208.80 | 32.22 | 7.54 | 76.86 | 0.41 | |
平均值 | 40.05 | 19.37 | 68.08 | 46.86 | 798.30 | 43.77 | 14.39 | 278.60 | 1.15 | |
标准差 | 22.58 | 4.07 | 24.81 | 11.08 | 217.98 | 7.43 | 4.27 | 364.06 | 0.38 | |
变异系数 | 0.56 | 0.21 | 0.36 | 0.24 | 0.27 | 0.17 | 0.30 | 1.31 | 0.33 | |
淖毛湖 矿区 (n=7) | 最大值 | 64.62 | 24.12 | 95.04 | 132.66 | 1 130.40 | 48.78 | 41.04 | 657.00 | 2.74 |
最小值 | 9.05 | 10.57 | 3.96 | 24.84 | 266.40 | 12.19 | 0.00 | 34.74 | 0.14 | |
平均值 | 35.78 | 18.01 | 60.22 | 60.04 | 702.77 | 32.34 | 13.12 | 226.13 | 1.52 | |
标准差 | 19.09 | 4.23 | 27.85 | 37.02 | 281.48 | 11.76 | 12.14 | 200.86 | 0.71 | |
变异系数 | 0.53 | 0.23 | 0.46 | 0.62 | 0.40 | 0.36 | 0.93 | 0.89 | 0.47 | |
野马泉 矿区 (n=3) | 最大值 | 47.52 | 20.34 | 64.80 | 54.54 | 723.60 | 55.80 | 25.20 | 132.12 | 2.11 |
最小值 | 31.14 | 17.06 | 53.28 | 29.52 | 603.00 | 30.78 | 13.55 | 71.10 | 1.25 | |
平均值 | 37.58 | 18.98 | 57.11 | 39.47 | 667.35 | 40.86 | 18.81 | 100.89 | 1.65 | |
标准差 | 6.56 | 1.22 | 4.61 | 9.49 | 49.82 | 10.23 | 4.18 | 21.83 | 0.35 | |
变异系数 | 0.17 | 0.06 | 0.08 | 0.24 | 0.07 | 0.25 | 0.22 | 0.22 | 0.21 | |
沙尔湖 矿区 (n=3) | 最大值 | 52.92 | 77.04 | 88.20 | 228.6 | 802.80 | 77.04 | 20.34 | 1512.00 | 21.24 |
最小值 | 46.98 | 20.52 | 66.78 | 31.14 | 457.20 | 23.58 | 11.18 | 75.96 | 1.67 | |
平均值 | 49.44 | 45.36 | 80.64 | 512.58 | 658.80 | 44.52 | 16.63 | 612.72 | 9.25 | |
标准差 | 2.53 | 23.58 | 9.81 | 547.20 | 146.85 | 23.31 | 3.94 | 639.85 | 8.58 | |
变异系数 | 0.05 | 0.52 | 0.12 | 1.07 | 0.22 | 0.52 | 0.24 | 1.04 | 0.93 | |
哈密市 (n=74) | 最大值 | 84.24 | 77.04 | 143.10 | 228.60 | 1404.00 | 77.04 | 41.04 | 1591.20 | 21.24 |
最小值 | 1.46 | 0.13 | 2.86 | 1.55 | 0.00 | 3.26 | 0.00 | 6.88 | 0.14 | |
平均值 | 35.76 | 18.40 | 58.94 | 43.00 | 633.06 | 35.13 | 12.05 | 183.56 | 1.61 | |
标准差 | 17.99 | 8.89 | 23.83 | 29.45 | 250.57 | 13.16 | 7.46 | 298.21 | 2.38 | |
变异系数 | 0.50 | 0.48 | 0.40 | 0.68 | 0.40 | 0.37 | 0.62 | 1.62 | 1.48 | |
上地壳丰度[ | 4.8 | 17.3 | 92 | 28 | — | 47 | 17 | 67 | — | |
新疆土壤背景值[ | 11.2 | 15.9 | 49.3 | 26.7 | 688 | 26.2 | 19.4 | 68.8 | 2.78 | |
全国土壤背景值[ | 11.2 | 12.7 | 61 | 22.6 | 583 | 26.9 | 26 | 74.2 | 2.94 |
Table 5 Statistics of heavy metal content in soils around typical coal mining areas in Hami
矿区 | As /(mg·kg-1) | Co /(mg·kg-1) | Cr /(mg·kg-1) | Cu /(mg·kg-1) | Mn /(mg·kg-1) | Ni /(mg·kg-1) | Pb /(mg·kg-1) | Zn /(mg·kg-1) | Fe /% | |
---|---|---|---|---|---|---|---|---|---|---|
大南湖 矿区 (n=22) | 最大值 | 55.98 | 25.20 | 91.26 | 74.52 | 705.60 | 41.58 | 24.12 | 93.42 | 17.14 |
最小值 | 6.89 | 0.13 | 2.86 | 1.55 | 0.00 | 3.26 | 0.00 | 6.88 | 4.10 | |
平均值 | 30.74 | 13.61 | 46.50 | 27.49 | 431.67 | 23.59 | 6.53 | 45.53 | 11.68 | |
标准差 | 11.32 | 6.00 | 20.52 | 16.74 | 186.60 | 10.67 | 5.31 | 19.76 | 3.70 | |
变异系数 | 0.37 | 0.44 | 0.44 | 0.61 | 0.43 | 0.45 | 0.81 | 0.43 | 0.32 | |
三道岭 矿区 (n=10) | 最大值 | 50.04 | 24.12 | 77.04 | 66.60 | 748.80 | 40.14 | 36.36 | 157.32 | 2.25 |
最小值 | 1.46 | 12.87 | 27.36 | 27.90 | 390.60 | 25.20 | 4.30 | 70.92 | 1.09 | |
平均值 | 29.94 | 18.22 | 54.04 | 38.41 | 543.24 | 33.16 | 12.80 | 95.65 | 1.65 | |
标准差 | 14.56 | 2.91 | 15.13 | 10.78 | 119.27 | 4.87 | 8.69 | 26.12 | 0.41 | |
变异系数 | 0.49 | 0.16 | 0.28 | 0.28 | 0.22 | 0.15 | 0.68 | 0.27 | 0.25 | |
巴里坤 矿区 (n=28) | 最大值 | 84.24 | 25.92 | 143.10 | 61.92 | 1 404.00 | 61.02 | 23.94 | 1591.20 | 1.77 |
最小值 | 6.73 | 10.55 | 12.26 | 20.34 | 208.80 | 32.22 | 7.54 | 76.86 | 0.41 | |
平均值 | 40.05 | 19.37 | 68.08 | 46.86 | 798.30 | 43.77 | 14.39 | 278.60 | 1.15 | |
标准差 | 22.58 | 4.07 | 24.81 | 11.08 | 217.98 | 7.43 | 4.27 | 364.06 | 0.38 | |
变异系数 | 0.56 | 0.21 | 0.36 | 0.24 | 0.27 | 0.17 | 0.30 | 1.31 | 0.33 | |
淖毛湖 矿区 (n=7) | 最大值 | 64.62 | 24.12 | 95.04 | 132.66 | 1 130.40 | 48.78 | 41.04 | 657.00 | 2.74 |
最小值 | 9.05 | 10.57 | 3.96 | 24.84 | 266.40 | 12.19 | 0.00 | 34.74 | 0.14 | |
平均值 | 35.78 | 18.01 | 60.22 | 60.04 | 702.77 | 32.34 | 13.12 | 226.13 | 1.52 | |
标准差 | 19.09 | 4.23 | 27.85 | 37.02 | 281.48 | 11.76 | 12.14 | 200.86 | 0.71 | |
变异系数 | 0.53 | 0.23 | 0.46 | 0.62 | 0.40 | 0.36 | 0.93 | 0.89 | 0.47 | |
野马泉 矿区 (n=3) | 最大值 | 47.52 | 20.34 | 64.80 | 54.54 | 723.60 | 55.80 | 25.20 | 132.12 | 2.11 |
最小值 | 31.14 | 17.06 | 53.28 | 29.52 | 603.00 | 30.78 | 13.55 | 71.10 | 1.25 | |
平均值 | 37.58 | 18.98 | 57.11 | 39.47 | 667.35 | 40.86 | 18.81 | 100.89 | 1.65 | |
标准差 | 6.56 | 1.22 | 4.61 | 9.49 | 49.82 | 10.23 | 4.18 | 21.83 | 0.35 | |
变异系数 | 0.17 | 0.06 | 0.08 | 0.24 | 0.07 | 0.25 | 0.22 | 0.22 | 0.21 | |
沙尔湖 矿区 (n=3) | 最大值 | 52.92 | 77.04 | 88.20 | 228.6 | 802.80 | 77.04 | 20.34 | 1512.00 | 21.24 |
最小值 | 46.98 | 20.52 | 66.78 | 31.14 | 457.20 | 23.58 | 11.18 | 75.96 | 1.67 | |
平均值 | 49.44 | 45.36 | 80.64 | 512.58 | 658.80 | 44.52 | 16.63 | 612.72 | 9.25 | |
标准差 | 2.53 | 23.58 | 9.81 | 547.20 | 146.85 | 23.31 | 3.94 | 639.85 | 8.58 | |
变异系数 | 0.05 | 0.52 | 0.12 | 1.07 | 0.22 | 0.52 | 0.24 | 1.04 | 0.93 | |
哈密市 (n=74) | 最大值 | 84.24 | 77.04 | 143.10 | 228.60 | 1404.00 | 77.04 | 41.04 | 1591.20 | 21.24 |
最小值 | 1.46 | 0.13 | 2.86 | 1.55 | 0.00 | 3.26 | 0.00 | 6.88 | 0.14 | |
平均值 | 35.76 | 18.40 | 58.94 | 43.00 | 633.06 | 35.13 | 12.05 | 183.56 | 1.61 | |
标准差 | 17.99 | 8.89 | 23.83 | 29.45 | 250.57 | 13.16 | 7.46 | 298.21 | 2.38 | |
变异系数 | 0.50 | 0.48 | 0.40 | 0.68 | 0.40 | 0.37 | 0.62 | 1.62 | 1.48 | |
上地壳丰度[ | 4.8 | 17.3 | 92 | 28 | — | 47 | 17 | 67 | — | |
新疆土壤背景值[ | 11.2 | 15.9 | 49.3 | 26.7 | 688 | 26.2 | 19.4 | 68.8 | 2.78 | |
全国土壤背景值[ | 11.2 | 12.7 | 61 | 22.6 | 583 | 26.9 | 26 | 74.2 | 2.94 |
指数 | As | Co | Cr | Cu | Mn | Ni | Pb | Zn | Fe |
---|---|---|---|---|---|---|---|---|---|
3.19 | 1.16 | 1.20 | 1.61 | 0.92 | 1.34 | 0.62 | 2.67 | 0.58 | |
重度 | 轻度 | 轻度 | 轻度 | 无 | 轻度 | 无 | 中度 | 无 | |
5.78 | 3.52 | 2.22 | 6.16 | 1.58 | 2.29 | 1.56 | 16.46 | 5.42 | |
重度 | 重度 | 中度 | 重度 | 轻度 | 中度 | 轻度 | 重度 | 重度 | |
0.85 | -0.56 | -0.52 | -0.15 | -0.81 | -0.30 | -1.51 | -0.02 | -1.73 | |
轻度 | 无 | 无 | 无 | 无 | 无 | 无 | 无 | 无 |
Table 6 Evaluation index of soil heavy metal pollution around typical coal mine area in Hami
指数 | As | Co | Cr | Cu | Mn | Ni | Pb | Zn | Fe |
---|---|---|---|---|---|---|---|---|---|
3.19 | 1.16 | 1.20 | 1.61 | 0.92 | 1.34 | 0.62 | 2.67 | 0.58 | |
重度 | 轻度 | 轻度 | 轻度 | 无 | 轻度 | 无 | 中度 | 无 | |
5.78 | 3.52 | 2.22 | 6.16 | 1.58 | 2.29 | 1.56 | 16.46 | 5.42 | |
重度 | 重度 | 中度 | 重度 | 轻度 | 中度 | 轻度 | 重度 | 重度 | |
0.85 | -0.56 | -0.52 | -0.15 | -0.81 | -0.30 | -1.51 | -0.02 | -1.73 | |
轻度 | 无 | 无 | 无 | 无 | 无 | 无 | 无 | 无 |
指标 | 重金属元素 | ||||||||
---|---|---|---|---|---|---|---|---|---|
As | Co | Cr | Cu | Mn | Ni | Pb | Zn | ||
最大值 | 75.22 | 58.14 | 5.81 | 42.81 | 2.04 | 14.70 | 10.58 | 23.13 | 146.25 |
最小值 | 1.30 | 0.10 | 0.12 | 0.29 | 0.26 | 0.62 | 0.25 | 0.10 | 7.71 |
平均值 | 31.93 | 13.89 | 2.39 | 8.05 | 0.93 | 6.70 | 3.19 | 2.67 | 69.75 |
标准差 | 16.06 | 6.71 | 0.97 | 5.51 | 0.35 | 2.51 | 1.88 | 4.33 | 27.02 |
变异系数 | 0.50 | 0.48 | 0.41 | 0.68 | 0.38 | 0.37 | 0.59 | 1.62 | 0.39 |
>轻微生态危害风险点数/个 | 21 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | |
超标率/% | 28.38 | 1.4 | 0 | 1.4 | 0 | 0 | 0 | 0 | |
45.78 | 19.91 | 3.43 | 11.54 | 1.34 | 9.61 | 4.57 | 3.83 |
Table 7 Assessment of potential ecological risks of soil heavy metals in the study area
指标 | 重金属元素 | ||||||||
---|---|---|---|---|---|---|---|---|---|
As | Co | Cr | Cu | Mn | Ni | Pb | Zn | ||
最大值 | 75.22 | 58.14 | 5.81 | 42.81 | 2.04 | 14.70 | 10.58 | 23.13 | 146.25 |
最小值 | 1.30 | 0.10 | 0.12 | 0.29 | 0.26 | 0.62 | 0.25 | 0.10 | 7.71 |
平均值 | 31.93 | 13.89 | 2.39 | 8.05 | 0.93 | 6.70 | 3.19 | 2.67 | 69.75 |
标准差 | 16.06 | 6.71 | 0.97 | 5.51 | 0.35 | 2.51 | 1.88 | 4.33 | 27.02 |
变异系数 | 0.50 | 0.48 | 0.41 | 0.68 | 0.38 | 0.37 | 0.59 | 1.62 | 0.39 |
>轻微生态危害风险点数/个 | 21 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | |
超标率/% | 28.38 | 1.4 | 0 | 1.4 | 0 | 0 | 0 | 0 | |
45.78 | 19.91 | 3.43 | 11.54 | 1.34 | 9.61 | 4.57 | 3.83 |
因子 载荷 | 提取主成分矩阵 | 初试 特征值 | 方差贡献 率/% | 累积方差 贡献率/% | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Co | Cr | Ni | Mn | Cu | Pb | As | Fe | Zn | ||||
PC1 | 0.905 | 0.806 | 0.783 | 0.770 | 0.755 | 0.670 | 0.554 | 0.589 | 4.557 | 50.629 | 50.629 | |
PC2 | -0.676 | 0.663 | 1.544 | 17.159 | 67.788 |
Table 8 Extract component matrix and explained variance
因子 载荷 | 提取主成分矩阵 | 初试 特征值 | 方差贡献 率/% | 累积方差 贡献率/% | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Co | Cr | Ni | Mn | Cu | Pb | As | Fe | Zn | ||||
PC1 | 0.905 | 0.806 | 0.783 | 0.770 | 0.755 | 0.670 | 0.554 | 0.589 | 4.557 | 50.629 | 50.629 | |
PC2 | -0.676 | 0.663 | 1.544 | 17.159 | 67.788 |
元素 | 拟合回归方程 | R2 |
---|---|---|
As | y=0.99x+0.03 | 0.99 |
Co | y=0.67x+5.48 | 0.81 |
Cr | y=0.98x+0.95 | 0.99 |
Cu | y=0.08x+34.59 | 0.48 |
Mn | y=0.99x+2.88 | 0.99 |
Ni | y=0.90x+2.70 | 0.87 |
Pb | y=0.96x+0.46 | 0.99 |
Table 9 Fitting results between measured value and predicted value based on PMF model
元素 | 拟合回归方程 | R2 |
---|---|---|
As | y=0.99x+0.03 | 0.99 |
Co | y=0.67x+5.48 | 0.81 |
Cr | y=0.98x+0.95 | 0.99 |
Cu | y=0.08x+34.59 | 0.48 |
Mn | y=0.99x+2.88 | 0.99 |
Ni | y=0.90x+2.70 | 0.87 |
Pb | y=0.96x+0.46 | 0.99 |
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