Hong-jun LIU, Teng NIU, Qiang YU, Kai SU, Lin-zhe YANG, Wei LIU, Hui-yuan WANG. Inversion and Estimation of Heavy Metal Element Content in Peach Forest Soil in Pinggu District of Beijing[J]. Spectroscopy and Spectral Analysis, 2022, 42(11): 3552
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 11, 3552 (2022)
Fig. 1. Overview of the study area and distribution location of sampling points
Fig. 2. Reflectance spectra (a) and first derivative transformation (b) of leaves under heavy metal stress and normal leaves
Fig. 3. Pearson correlations of spectral data using four transformations
Fig. 4. Spatial distribution of three heavy metal elements
Fig. 5. Accuracy verification of heavy metal content prediction model for Cd, As and Pb
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Table 1. Descriptive statistics of heavy metal content in soil
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Table 2. Parameter of blue edge, yellow edge and red edge
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Table 3. Correlation coefficients between the contents of three heavy metals and the characteristic absorption bands of four spectral transformation
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Table 4. Characteristic band determined by stepwise regression
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Table 5. Vegetation indexes and its correlation coefficients with the contents of three heavy metals
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Table 6. Spectral models of three heavy metals
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