Hongyun Ye, Heigang Xiong, Fang Zhang, Ning Wang, Lifang Ma. CWT-Based Estimation of Soil Organic Matter Content in Arid Area Under Different Human Disturbance Degrees[J]. Laser & Optoelectronics Progress, 2019, 56(5): 051101
- Laser & Optoelectronics Progress
- Vol. 56, Issue 5, 051101 (2019)
Fig. 1. Soil spectral curves under different human disturbance degrees
Fig. 2. Correlation analysis among soil organic matter content, spectral reflectance, and its transformation. (a) Zone Ⅰ; (b) zone Ⅱ; (c) zone Ⅲ
Fig. 3. Correlation scalogram between R wavelet coefficient and soil organic matter content in mild disturbance zone
Fig. 4. Correlation scalogram between R wavelet coefficient and soil organic matter in moderate disturbance zone
Fig. 5. Correlation scalogram between R wavelet coefficient and soil organic matter content in severe disturbance zone
Fig. 6. Scatter plots of predicted and measured values of soil organic matter. (a) Zone Ⅰ; (b) zone Ⅱ; (c) zone Ⅲ
Fig. 7. Kriging interpolation plots of measured and predicted values of soil organic matter content. (a) Zone Ⅰ; (b) zone Ⅱ; (c) zone Ⅲ
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Table 1. Basic status of three typical disturbance zones in study area
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Table 2. Descriptive statistics of soil organic matter content
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Table 3. Selection of sensitive wavelengths
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Table 4. Calibration and validation results of inversion model for soil organic matter content
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