Research Article
The Impact of Precipitation Regimes on Forest Fires in Yunnan Province, Southwest China
Table 2
Mann-Whitney
test for the number of fires and area burned in Yunnan province during the two periods (1982–1988, 1989–2008).
| | Number of fires | I | II | III | IV | V |
| | Period of 1982–1989 | 225 (42) | 982 (377) | 1651 (734) | 76 (90) | 37 (43) | | Period of 1990–2008 | 45 (37) | 91 (44) | 228 (103) | 18 (11) | 9 (7) | | Change of mean (%) | −80 | −90.7 | −86.2 | −76.3 | −75.7 | | 0.000 | 0.000 | 0.000 | 19 | 28 | | Significance level | | | | | |
| | Burned area (ha) | I | II | III | IV | V |
| | Period of 1982–1989 | 9189 (4439) | 20395 (15962) | 32410 (26562) | 176 (143) | 2799 (6189) | | Period of 1990–2008 | 1121 (1068) | 1709 (1067) | 5687 (6428) | 85 (78) | 290 (521) | | Change of mean (%) | −87.8 | −91.6 | −82.5 | −51.7 | −89.6 | | 0.000 | 0.000 | 7 | 61 | 38 | | Significance level | | | | | |
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