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3 4种不同采样密度数据元素地块预测值与实测值相对误差统计
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Table 3 Relative error of elements land parcel predicted value vs. measured value using four sampling density datasets
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元 素 | 采样 点位 | 不同Er范围内地块数量比例/% | 元 素 | 采样 点位 | 不同Er范围内地块数量比例/% | ≤5% | 5%~10% | 10%~20% | 20%~30% | >30% | ≤5% | 5%~10% | 10%~20% | 20%~30% | >30% | | 720 | 75.7 | 12.8 | 8.5 | 2.1 | 0.8 | | 720 | 64.8 | 17.8 | 12.0 | 2.7 | 2.6 | N | 640 | 72.2 | 14.2 | 9.8 | 2.3 | 1.5 | P | 640 | 62.9 | 18.4 | 12.7 | 3.1 | 2.8 | | 480 | 64.7 | 17.2 | 13.7 | 2.4 | 2.1 | | 480 | 53.3 | 19.6 | 16.1 | 6.5 | 4.6 | | 320 | 56.0 | 21.4 | 16.7 | 3.3 | 2.6 | | 320 | 43.8 | 22.5 | 21.0 | 7.3 | 5.4 | | 720 | 97.7 | 2.0 | 0.3 | 0.0 | 0.1 | | 720 | 47.3 | 11.5 | 14.7 | 8.2 | 18.3 | K | 640 | 97.5 | 2.1 | 0.3 | 0.0 | 0.0 | Hg | 640 | 40.0 | 12.2 | 18.1 | 10.5 | 19.2 | | 480 | 96.6 | 2.9 | 0.3 | 0.1 | 0.1 | | 480 | 32.6 | 11.0 | 18.9 | 11.2 | 26.3 | | 320 | 95.7 | 3.7 | 0.5 | 0.0 | 0.1 | | 320 | 24.9 | 10.9 | 20.5 | 12.8 | 30.9 | | 720 | 59.4 | 16.1 | 13.0 | 5.8 | 5.7 | | 720 | 83.6 | 11.6 | 3.7 | 0.4 | 0.6 | Cd | 640 | 53.2 | 17.6 | 15.0 | 7.6 | 6.6 | Pb | 640 | 81.9 | 12.2 | 4.5 | 0.6 | 0.8 | | 480 | 53.2 | 17.6 | 15.0 | 7.6 | 6.6 | | 480 | 76.0 | 16.2 | 5.9 | 1.1 | 0.8 | | 320 | 36.4 | 17.6 | 22.9 | 11.0 | 12.0 | | 320 | 67.1 | 17.8 | 11.8 | 2.3 | 0.9 | | 720 | 72.6 | 16.7 | 8.7 | 1.5 | 0.6 | | 720 | 87.9 | 7.7 | 3.3 | 0.9 | 0.1 | As | 640 | 70.7 | 18.3 | 8.3 | 1.8 | 0.9 | Cu | 640 | 87.3 | 9.0 | 3.1 | 0.4 | 0.2 | | 480 | 60.9 | 22.7 | 13.0 | 2.1 | 1.3 | | 480 | 82.2 | 12.5 | 4.0 | 0.9 | 0.3 | | 320 | 56.5 | 22.3 | 16.2 | 3.5 | 1.5 | | 320 | 73.8 | 18.1 | 6.5 | 1.4 | 0.2% | | 720 | 85.0 | 10.2 | 3.5 | 1.1 | 0.2 | | 720 | 84.0 | 10.8 | 4.7 | 0.5 | 0.0 | Zn | 640 | 85.9 | 10.1 | 2.9 | 0.8 | 0.3 | Ni | 640 | 82.5 | 10.9 | 5.7 | 0.8 | 0.2 | | 480 | 78.2 | 13.8 | 5.0 | 1.4 | 1.5 | | 480 | 76.7 | 16.5 | 5.7 | 0.8 | 0.3 | | 320 | 73.2 | 18.5 | 6.2 | 1.8 | 0.3 | | 320 | 72.0 | 18.3 | 8.4 | 0.9 | 0.3 | | 720 | 88.7 | 8.2 | 2.8 | 0.3 | 0.0 | | 720 | 74.8 | 14.9 | 7.6 | 1.2 | 1.6 | Cr | 640 | 88.1 | 8.8 | 2.8 | 0.3 | 0.0 | Se | 640 | 70.8 | 15.8 | 9.3 | 2.3 | 1.9 | | 480 | 84.6 | 11.9 | 3.0 | 0.3 | 0.2 | | 480 | 61.4 | 20.7 | 12.3 | 2.9 | 2.6 | | 320 | 78.3 | 16.7 | 4.4 | 0.5 | 0.0 | | 320 | 56.5 | 20.3 | 16.2 | 4.0 | 3.0 | | 720 | 72.2 | 14.6 | 8.8 | 2.7 | 1.7 | | 720 | 87.5 | 8.8 | 3.2 | 0.3 | 0.1 | I | 640 | 69.2 | 14.6 | 9.9 | 4.0 | 2.3 | F | 640 | 87.5 | 8.3 | 4.0 | 0.1 | 0.1 | | 480 | 61.9 | 16.9 | 13.7 | 5.0 | 2.5 | | 480 | 82.1 | 12.7 | 4.7 | 0.3 | 0.3 | | 320 | 51.0 | 23.2 | 16.5 | 6.1 | 3.2 | | 320 | 75.7 | 17.1 | 6.5 | 0.6 | 0.2 |
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