Table 2 Standard deviation ellipse parameters of historical forest fire points in Panxi
Time period | Longitude of center of gravity (°E) | latitude of center of gravity (°N) | Short half axis (km) | Semimajor axis (km) | Oblateness | Direction angle (°) |
|---|---|---|---|---|---|---|
2004–2007 | 101.638 | 27.489 | 0.737 | 0.990 | 0.253 | 172.032 |
2008–2016 | 101.926 | 27.172 | 0.574 | 0.977 | 0.403 | 17.742 |
2017–2020 | 101.889 | 27.200 | 0.570 | 1.056 | 0.486 | 9.634 |