土壤水分对数字图像估算土壤有机碳的影响
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王梓阳, 贾浩, 赵钰, 张美俊, 冯美臣, 王超, 杨武德
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Effects of Soil Moisture on Digital Image Estimation of Soil Organic Carbon
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Wang Ziyang, Jia Hao, Zhao Yu, Zhang Meijun, Feng Meichen, Wang Chao, Yang Wude
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表3 临界含水量分组与全组SOC预测模型表现
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Table 3 Performance of SOC prediction models for critical moisture content grouping and the entire group
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组分
Group | 建模方法
Model
method | 校正集
Calibration set | | 验证集
Validation set | | Rc2 | RMSEc | RPDc | Rv2 | RMSEv | RPDv | 干燥组
Dry group | MLR | 0.630 | 1.249 | 1.612 | | 0.560 | 1.401 | 1.525 | | SMLR | 0.659 | 1.170 | 1.720 | | 0.595 | 1.310 | 1.576 | | BP-ANN | 0.829 | 1.139 | 1.768 | | 0.713 | 1.266 | 1.687 | 湿润组
Moist group | MLR | 0.627 | 1.221 | 1.669 | | 0.653 | 1.307 | 1.570 | | SMLR | 0.634 | 1.241 | 1.642 | | 0.655 | 1.293 | 1.587 | | BP-ANN | 0.815 | 1.180 | 1.727 | | 0.720 | 1.116 | 1.838 | 全组
Entire group | MLR | 0.641 | 1.228 | 1.675 | | 0.672 | 1.204 | 1.658 | | SMLR | 0.754 | 1.270 | 1.620 | | 0.689 | 1.377 | 1.449 | | BP-ANN | 0.793 | 1.271 | 1.618 | | 0.710 | 1.499 | 1.415 |
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