Deforestation as the Prominent Driver of the Intensifying Wildfire in Cambodia, Revealed through Geospatial Analysis
Abstract
:1. Introduction
2. Data and Methods
2.1. Study Area and Spatial Regression Grids
2.2. Dependent Variable: Spatiotemporal Distribution of Fire
2.3. Explanatory Variables: Identification, Filtering and Pre-Processing
2.4. Identifying Significant Drivers of Wildfire Using OLS
2.5. Geographically Weighted Regression (GWR)
3. Results
3.1. Analysis of OLS Regression and GWR for Model Validity
3.2. Spatiotemporal Evolution of Fire Activity
3.3. The Relative Influence of Each Driver of Fire
4. Discussion
4.1. Model Validation for the Quantitative Analysis of Fire Drivers
4.2. Dominant Drivers of Wildfire in Cambodia
5. Summary
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Category | Variable | Data Source | Unit | Resolution | |
---|---|---|---|---|---|
Meteorological variables | Wind speed | TerraClimate | m/s | 2003–2020 (Yearly) | 4 km |
Precipitation | mm | ||||
Maximum Temperature | °C | ||||
Soil moisture | mm | ||||
Topographic variables | Elevation | SRTM DEM | m | 2003–2020 (Yearly) | 30 m |
Slope | ° | ||||
Human variables | Forest loss | Global Land Analysis & Discovery (GLAD) | % | 2003–2020 (Yearly) | 30 m |
Population density | WorldPop | % | 2003–2020 (Yearly) | 30 arc-seconds (1 km) |
Variable | Std Coef. | StdError | t-Statistic | p-Value | VIF | Std Coef. | StdError | t-Statistic | p-Value | VIF |
---|---|---|---|---|---|---|---|---|---|---|
2013 | 2015 | |||||||||
Wind speed | 0.186 | 0.009 | 2.052 | 0.040 ** | 1.22 | −0.132 | 0.080 | −3.908 | 0.000 ** | 1.17 |
Precipitation | −0.367 | 0.111 | −5.667 | 0.000 ** | 1.18 | −0.173 | 0.031 | −2.385 | 0.017 ** | 1.14 |
Soil moisture | −0.198 | 0.179 | −2.509 | 0.012 ** | 1.31 | −0.421 | 0.179 | −2.350 | 0.019 ** | 1.44 |
Forest loss | 0.524 | 0.057 | 22.320 | 0.000 ** | 1.16 | 0.405 | 0.108 | 3.726 | 0.000 ** | 1.11 |
Elevation | 0.224 | 0067 | 3.774 | 0.000 ** | 1.33 | 0.335 | 0.006 | 3.526 | 0.001 ** | 1.10 |
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Sim, M.-S.; Wee, S.-J.; Alcantara, E.; Park, E. Deforestation as the Prominent Driver of the Intensifying Wildfire in Cambodia, Revealed through Geospatial Analysis. Remote Sens. 2023, 15, 3388. https://doi.org/10.3390/rs15133388
Sim M-S, Wee S-J, Alcantara E, Park E. Deforestation as the Prominent Driver of the Intensifying Wildfire in Cambodia, Revealed through Geospatial Analysis. Remote Sensing. 2023; 15(13):3388. https://doi.org/10.3390/rs15133388
Chicago/Turabian StyleSim, Min-Sung, Shi-Jun Wee, Enner Alcantara, and Edward Park. 2023. "Deforestation as the Prominent Driver of the Intensifying Wildfire in Cambodia, Revealed through Geospatial Analysis" Remote Sensing 15, no. 13: 3388. https://doi.org/10.3390/rs15133388