Studying the Feasibility of Assimilating Sentinel-2 and PlanetScope Imagery into the SAFY Crop Model to Predict Within-Field Wheat Yield
Abstract
:1. Introduction
2. Materials and Methods
2.1. LAI Maps Creation
2.2. Simple Algorithm for Yield Estimate (SAFY) Model
2.3. Pre-Processing of Yield Monitor Data
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
Vegetation Index | Equation | Reference |
---|---|---|
Simple ratio (SR) | Jordan [61] | |
Enhanced vegetation index 2 (EVI2) | Jiang et al. [62]; Nguy-Robertson et al. [63] | |
Green chlorophyll vegetation index (GCVI) | Gitelson et al. [64]; Gitelson et al. [65] | |
Normalized difference vegetation index (NDVI) | Rouse et al. [66] | |
Modified triangular vegetation index 2 (MTVI2) | Haboudane et al. [67] | |
Modified soil-adjusted vegetation index (MSAVI) | Haboudane et al. [67]; Qi et al. [68] | |
Wide dynamic range vegetation index (WDRVI) | Gitelson [69]; Nguy-Robertson et al. [14] | |
Green wide dynamic range vegetation index (Green-WDRVI) | Nguy-Robertson et al. [14]; Peng and Gitelson [70] | |
Optimized soil-adjusted vegetation index (OSAVI) | Rondeaux et al. [71] | |
Green simple ratio (GSR) | Sripada et al. [72] | |
Green NDVI (GNDVI) | Gitelson and Merzlyak [73] | |
Renormalized difference vegetation index (RDVI) | Roujean et al. [74] | |
Transformed vegetative index (TVI) | Rouse et al. [66]; Haas et al. [75] |
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Parameters | Unit | Range | Calibrated Value | Source |
---|---|---|---|---|
Climate efficiency | - | 0.48 | [20] | |
Initial dry above-ground mass | g m2 | 5.3 | Calibrated | |
Light-interception coefficient | - | 0.3–1 | 0.53 | Calibrated |
Temperature for growth (minimal, Tmin; maximal, Tmax; and optimal, Topt) | °C | 0, 18, 26 | Calibrated | |
Specific leaf area (SLA) | m2 g−1 | 0.022 | [20] | |
Partition-to-leaf function: parameter a (PLa) | - | 0.01–0.3 | 0.056 | Calibrated |
Partition-to-leaf function: parameter b (PLb) | - | 10−5–10−2 | 0.0024 | Calibrated |
Sum of temperature for senescence (STT) | °C | 800–2000 | 1350 | Calibrated |
Rate of senescence (Rs) | °C day | 0–105 | 8500 | Calibrated |
Effective light-use efficiency (ELUE) | g MJ−1 | 1.5– 3.5 | 2.5 | Calibrated |
References | Satellite | Indices | RMSE (g/m2) |
---|---|---|---|
This study | Sentinel-2 | S2-LAI | 88 |
MSAVI | 74 | ||
PlanetScope and Sentinel-2 fused data | MSAVI | 69 | |
Chahbi et al. [25] | SPOT5 | NDVI | 90 |
Dong et al. [24] | Fusion of Landsat-8 and MODIS (MOD09Q1) | EVI2 | 176–231 |
Silvestro et al. [22] | Landsat-8, HJ1A, and HJ1B | SR | 109 |
Chahbi Bellakanji et al. [59] | SPOT4 and SPOT5 | NDVI | 80 |
Gaso et al. [44] | Landsat-7 and Landsat-8 | NDVI and CI | 153 |
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Manivasagam, V.S.; Sadeh, Y.; Kaplan, G.; Bonfil, D.J.; Rozenstein, O. Studying the Feasibility of Assimilating Sentinel-2 and PlanetScope Imagery into the SAFY Crop Model to Predict Within-Field Wheat Yield. Remote Sens. 2021, 13, 2395. https://doi.org/10.3390/rs13122395
Manivasagam VS, Sadeh Y, Kaplan G, Bonfil DJ, Rozenstein O. Studying the Feasibility of Assimilating Sentinel-2 and PlanetScope Imagery into the SAFY Crop Model to Predict Within-Field Wheat Yield. Remote Sensing. 2021; 13(12):2395. https://doi.org/10.3390/rs13122395
Chicago/Turabian StyleManivasagam, V.S., Yuval Sadeh, Gregoriy Kaplan, David J. Bonfil, and Offer Rozenstein. 2021. "Studying the Feasibility of Assimilating Sentinel-2 and PlanetScope Imagery into the SAFY Crop Model to Predict Within-Field Wheat Yield" Remote Sensing 13, no. 12: 2395. https://doi.org/10.3390/rs13122395
APA StyleManivasagam, V. S., Sadeh, Y., Kaplan, G., Bonfil, D. J., & Rozenstein, O. (2021). Studying the Feasibility of Assimilating Sentinel-2 and PlanetScope Imagery into the SAFY Crop Model to Predict Within-Field Wheat Yield. Remote Sensing, 13(12), 2395. https://doi.org/10.3390/rs13122395