Spectroscopy and Spectral Analysis, Volume. 41, Issue 11, 3424(2021)
Estimation of Organic Matter, Moisture, Total Iron and pH From Back Soil Based on Multi Scales SNV-CWT Transformation
Figures & Tables(10)
Fig. 4. Coefficients of determination (
Fig. 5. Correlations between different soil properties and reflectance before and after SNV-CWT
Fig. 6. Statistical indicators of models taking bands selected by MBC as input variables
Table 1. Statistical values of soil component from study area
View tableView in ArticleTable 1. Statistical values of soil component from study area
Contents Max Min Mean SD CV/% SOM/(g·kg-1) 63.36 19.87 34.86 12.65 36.29 SMC/(g·kg-1) 244.61 38.02 105.25 46.82 44.54 Fe/(g·kg-1) 33.63 23.02 27.16 2.12 7.81 pH 8.09 4.73 5.74 0.77 13.41
Table 2. Statistical indicators ofvalidation models of SOM, SMC, Fe and pHunder different transformation methods
View tableView in ArticleTable 2. Statistical indicators ofvalidation models of SOM, SMC, Fe and pHunder different transformation methods
Contents SI Raw FD SD CR SNV MSC GS Log(1/R) SNV-CWT R2 0.43 0.83 0.70 0.73 0.84 0.68 0.74 0.43 0.90 SOM Mse 0.83 0.25 0.44 0.40 0.23 0.47 0.38 0.83 0.15 RPD 1.46 2.51 1.85 2.01 2.71 1.76 1.97 1.37 3.21 R2 - 0.83 0.87 0.77 0.79 0.74 0.36 0.02 0.93 SMC Mse - 3.09 2.32 4.28 3.83 4.831 1.72 18.68 1.37 RPD - 2.79 3.49 2.45 2.34 2.34 1.26 1.13 4.71 R2 - - 0.20 0.17 0.14 0.09 0.27 - 0.48 Fe Mse - - 0.03 0.03 0.03 0.03 0.03 - 0.02 RPD - - 1.12 1.10 1.11 1.05 1.18 - 1.39 R2 - 0.44 0.36 0.64 0.61 0.28 0.39 0.13 0.62 pH Mse - 0.27 0.32 0.18 0.19 0.36 0.30 0.88 0.19 RPD - 1.38 1.27 1.67 1.60 1.18 1.28 0.95 1.63
Table 3. Statistical indicators of models taking bands selected by PCC as input variables
View tableView in ArticleTable 3. Statistical indicators of models taking bands selected by PCC as input variables
Contents N T Max Min R2 Mse RPD SOM 3 0.80 0.81 0 0.91 0.12 3.49 SMC 99 0.75 0.90 0 0.91 1.66 4.22 Fe 75 0.11 0.22 0 0.43 0.02 1.34 pH 71 0.29 0.44 0 0.65 0.17 1.73
Table 4. Statistical indicators of models taking bands selected by GRA as input variables
View tableView in ArticleTable 4. Statistical indicators of models taking bands selected by GRA as input variables
Contents N T Max Min R2 Mse RPD SOM 2 0.90 0.90 0.68 0.91 0.13 3.32 SMC 89 0.92 0.95 0.74 0.90 1.76 4.02 Fe 80 0.81 0.83 0.74 0.45 0.02 1.38 pH 98 0.82 0.85 0.70 0.65 0.17 1.75
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Yang TAN, Qi-gang JIANG, Hua-xin LIU, Bin LIU, Xin GAO, Bo ZHANG. Estimation of Organic Matter, Moisture, Total Iron and pH From Back Soil Based on Multi Scales SNV-CWT Transformation[J]. Spectroscopy and Spectral Analysis, 2021, 41(11): 3424
Paper Information
Category: Orginal Article
Received: Jan. 25, 2021
Accepted: --
Published Online: Dec. 17, 2021
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