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据统计,目前世界各地每年发生森林火灾达20多万次,平均每年烧毁的森林面积占世界森林面积的0.1％以上。有据可查的烧毁百万公顷以上的特大森林火灾,就有7次之多。 第一次是1825年,发生在美国的缅因州和加拿大新不伦瑞克省,烧毁森林面积120万公顷。 第二次是1871年,在美国的威斯康星州和密执安州,烧毁森林面积152万公顷。 第三次是1915年,在西伯利亚,烧了五个月,烧毁森林1200万公顷。 第四次是1976年,在澳大利亚,烧了几个月,烧毁森林及草原1.17亿公顷,占国土面积的七分之一。这次大火,曾有“世界火海”之称。
According to statistics, forest fires have hit more than 200,000 annual occurrences each year in the world and the average area burned annually accounts for more than 0.1% of the world’s forest area. As many as seven times as many well-documented forest fires have destroyed more than 1 million hectares of land. The first was in 1825 in Maine, the United States and New Brunswick, Canada, burning 1.2 million hectares of forest. The second was in 1871, burning 1.52 million hectares of forest in Wisconsin and Michigan in the United States. The third was in 1915 in Siberia, burned for five months, burning 12 million hectares of forest. Fourth, in 1976, in Australia, it burned for a few months, burning 117 million hectares of forest and grassland, accounting for one seventh of the land area. The fire, there was “the world’s fire sea,” said.