看數據五分之一的人類引發野火, 是故意縱火. 相信, 實際縱火比例隻會更高.

Rice reports that debris burning starts the most human-caused fires, at 29 percent, with arson the cause of 21 percent of fires. Equipment use causes 11 percent of fires, while campfires and children playing with fireworks or matches each cause 5 percent of fires. The Fourth of July, predictably, is the biggest day for wildfires, with 7,762 fires ignited on that date over the 21-year study period.

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