无人机多光谱反演黄河口重度盐渍土盐分的研究

王丹阳,陈红艳,王桂峰,丛津桥,王向锋,魏学文

Salinity Inversion of Severe Saline Soil in the Yellow River Estuary Based on UAV Multi-Spectra

WANG DanYang,CHEN HongYan,WANG GuiFeng,CONG JinQiao,WANG XiangFeng,WEI XueWen

表3 土壤盐分反演模型

Table 3 The inversion models of soil salt

分析方法 Analytical methods 建模方法 Modeling methods 建模精度Calibration accuracy 验证精度Verification accuracy 决定系数 R2 均方根误差 RMSE 决定系数 R2 均方根误差 RMSE 相对分析误差 RPD 相关性分析 Correlation analysis MLR 0.645 5.217 0.564 5.157 1.261 SVM 0.730 5.363 0.782 5.596 2.083 PLS 0.711 5.545 0.707 5.362 1.870 灰色关联度 Grey correlation index MLR 0.691 4.291 0.687 5.013 1.731 SVM 0.820 3.626 0.773 4.960 2.203 PLS 0.722 4.677 0.724 4.731 2.210