Sentinel-MSI VNIR and SWIR Bands Sensitivity Analysis for Soil Salinity Discrimination in an Arid Landscape
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Site
2.2. Soil Sampling and Laboratory Analyses
2.3. Spectroradiometric Measurements
2.4. Continuum-Removed Reflectance Spectrum
2.5. First Derivative
2.6. Sentinel-MSI Simulated Data
3. Results and Discussion
3.1. Spectral and Laboratory Analyses
3.2. CRRS and FD Analyses
3.3. Statistical Analysis between EC-Lab and Spectral Bands of MSI
3.4. Discussion
4. Conclusions
Author Contributions
Acknowledgments
Conflicts of Interest
References
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Spectral Bands | Sentinel-MSI | ||
---|---|---|---|
λ Centre (nm) | ∆λ (nm) | Pixel Size (m) | |
Coastal-Aerosol | 443 | 20 | 60 |
Blue | 490 | 65 | 10 |
Green | 560 | 35 | 10 |
Red | 655 | 30 | 10 |
Red-Edge-1 | 705 | 15 | 20 |
Red-Edge-2 | 740 | 15 | 20 |
Red-Edge-3 | 783 | 20 | 20 |
NIR-1 | 842 | 115 | 10 |
NIR-2 | 865 | 20 | 20 |
Water-vapor * | 945 | 20 | 60 |
Cirrus * | 1375 | 30 | 60 |
SWIR-1 | 1609 | 85 | 20 |
SWIR-2 | 2201 | 187 | 20 |
Sample | Munsell Color | Standard Color | Texture | Remarks |
---|---|---|---|---|
A | 10YR 7/6 | Yellow | Sandy | Sandy soil without gypsum and shells |
B | 10YR 8/1 | White | Sandy-Clay-Loam | With small amount of gypsum crystals and shells |
C | 10YR 7/2 | Light-gray | Loamy-Sandy | Sandy soil with small amount of gypsum crystals and shells |
D | 10YR 7/2 | Light-gray | Sandy-Loam | Beginning of salt crust formation. Small amount of gypsum crystals and shells |
E | 10YR 7/2 | Light-gray | Sandy-Clay-Loam | Beginning of salt crust formation. Small amount of gypsum crystals and shells |
F | 10YR 7/2 | Light-gray | Sandy-Clay-Loam | Crust of salt with gypsum, calcium carbonate, and small amount of shells |
G | 5Y 8/1 | White | Sandy | Pure gypsum crystal deposited by wind erosion |
H | 10YR 8/1 | White | Pure salt (halite) | Sabkha |
Sample | pH | EC-Lab | Cl− | HCO3− | SO4−2 | Ca2+ | K+ | Mg2+ | Na+ | SAR (mmoles/L)0.5 |
---|---|---|---|---|---|---|---|---|---|---|
(mg/L) | (mg/L) | |||||||||
A | 8.33 | 26.0 | 9567.5 | 305.1 | 4624.7 | 563.6 | 367.6 | 558.2 | 6599.4 | 46.9 |
B | 8.10 | 55.6 | 23,209.9 | 305.1 | 6771.7 | 392.5 | 697.2 | 1247.9 | 15,164.8 | 84.5 |
C | 7.71 | 119.6 | 56,341.7 | 305.1 | 30,495.2 | 1787.8 | 1132.9 | 2327.9 | 44,057.0 | 162.0 |
D | 7.47 | 195.3 | 120,833.4 | 305.1 | 27,527.6 | 2056.0 | 1840.0 | 4484.8 | 79,607.6 | 225.9 |
E | 7.57 | 333.0 | 142,094.4 | 305.1 | 6696.6 | 1342.3 | 1236.1 | 2487.4 | 86,990.4 | 325.2 |
F | 7.35 | 406.5 | 185,325.1 | 305.1 | 68,488.8 | 1580.3 | 3105.0 | 4643.2 | 140,500.0 | 403.6 |
G | 7.60 | 445.5 | 135,716.1 | 610.2 | 1700.0 | 1128.1 | 843.4 | 1239.7 | 84,795.9 | 415.2 |
H | 7.60 | 507.0 | 142,803.1 | 610.2 | 17,107.4 | 1227.2 | 1644.9 | 1399.0 | 95,860.0 | 444.7 |
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Bannari, A.; El-Battay, A.; Bannari, R.; Rhinane, H. Sentinel-MSI VNIR and SWIR Bands Sensitivity Analysis for Soil Salinity Discrimination in an Arid Landscape. Remote Sens. 2018, 10, 855. https://doi.org/10.3390/rs10060855
Bannari A, El-Battay A, Bannari R, Rhinane H. Sentinel-MSI VNIR and SWIR Bands Sensitivity Analysis for Soil Salinity Discrimination in an Arid Landscape. Remote Sensing. 2018; 10(6):855. https://doi.org/10.3390/rs10060855
Chicago/Turabian StyleBannari, Abderrazak, Ali El-Battay, Rachid Bannari, and Hassan Rhinane. 2018. "Sentinel-MSI VNIR and SWIR Bands Sensitivity Analysis for Soil Salinity Discrimination in an Arid Landscape" Remote Sensing 10, no. 6: 855. https://doi.org/10.3390/rs10060855