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随着飞机播种造林事业的发展,三十年来,我国在大部分省、区的偏远大面积荒山开展了飞播造林,扩大了森林资源。但是,由于森林火灾的原因,飞播林保存率受到了严重的影响。如广西壮族自治区,据1984年飞播造林成效清查,全区1961—1983年累计飞播作业面积4500多万亩,有效面积3330多万亩,但保存面积仅925万多亩,占有效面积的27.7%;失败面积共计2344万多亩,其中因火烧失败的达1123万多亩,占总失败面积的47.9%,占有效面积的33.6%。有些播区因火灾几乎毁于一旦。每年因火灾而使飞播林造成的损失也是惊人的。据广西百色地区护林办统计,85年
With the development of aircraft sowing and afforestation undertakings, over the past 30 years China has carried out aerial seeding and afforestation in large areas of remote mountainous areas in most provinces and autonomous regions and expanded forest resources. However, the preservation of aerial seeding forests has been severely affected by forest fires. For example, in Guangxi Zhuang Autonomous Region, according to the results of aerial seeding afforestation conducted in 1984, the total area of aeronautical and radio-broadcasting operations in 1961-1983 was over 45 million mu with an effective area of 33.3 million mu but with a preserved area of only 9.25 million mu, accounting for 27.7% of the effective area ; Total area of 23.44 million mu of failure, of which 11.33 million mu of fire failure, accounting for 47.9% of total failure area, accounting for 33.6% of the effective area. Some broadcast areas were almost destroyed by fire. The damage caused to the aerial plantation by the fire every year is also alarming. According to the statistics of Guangxi Baise Forest Guard, 85 years