Remote Sensing of Agro-droughts in Guangdong Province of China Using MODIS Satellite Data
Abstract
:1. Introduction
2. Methodology
2.1. The study region
2.2 Image data for the study
2.3 Vegetation index for the agro-drought monitoring
2.4 Land surface temperature retrieval for drought monitoring
2.5 Vegetation supply water index (VSWI) as indicator of agro-drought severity
2.6 Improvement of VSWI for agro-drought identification
2.7 Precipitation distance index for drought monitoring
2.8 Development of approach for agro-drought monitoring in Guangdong
2.9 Image processing procedures in drought monitoring
3. Results and Analysis
3.1 Spatial distribution of agro-drought in Guangdong
3.2 Seasonal variation of agro-drought in 2006
3.3 Comparison of SDI and MPDI for drought monitoring
3.4 Comparison with rainfall distribution
3.4 Comparison with other sources
4. Conclusions
Acknowledgments
References and Notes
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NDVI | VSWId | VSWIW | NDVI | VSWId | VSWIw |
---|---|---|---|---|---|
<0.05 | 0.11 | 0.25 | 0.35-0.4 | 0.89 | 2.0 |
0.05-0.1 | 0.22 | 0.5 | 0.4-0.45 | 1.0 | 2.25 |
0.1-0.15 | 0.33 | 0.75 | 0.45-0.5 | 1.11 | 2.5 |
0.15-0.2 | 0.44 | 1.0 | 0.5-0.55 | 1.22 | 2.75 |
0.2-0.25 | 0.56 | 1.25 | 0.55-0.6 | 1.33 | 3.0 |
0.25-0.3 | 0.67 | 1.5 | 0.6-0.65 | 1.44 | 3.25 |
0.3-0.35 | 0.78 | 1.75 | 0.65-0.7 | 1.56 | 3.5 |
© 2008 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).
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Gao, M.; Qin, Z.; Zhang, H.; Lu, L.; Zhou, X.; Yang, X. Remote Sensing of Agro-droughts in Guangdong Province of China Using MODIS Satellite Data. Sensors 2008, 8, 4687-4708. https://doi.org/10.3390/s8084687
Gao M, Qin Z, Zhang H, Lu L, Zhou X, Yang X. Remote Sensing of Agro-droughts in Guangdong Province of China Using MODIS Satellite Data. Sensors. 2008; 8(8):4687-4708. https://doi.org/10.3390/s8084687
Chicago/Turabian StyleGao, Maofang, Zhihao Qin, Hong’ou Zhang, Liping Lu, Xia Zhou, and Xiuchun Yang. 2008. "Remote Sensing of Agro-droughts in Guangdong Province of China Using MODIS Satellite Data" Sensors 8, no. 8: 4687-4708. https://doi.org/10.3390/s8084687