森林火灾是一种自然灾害，突发性强，损失大，贯彻“预防为主，积极扑灭”的方针，需采取有效措施和手段，而航空护林正是当代世界各国竞相发展的一项有效措施和手段。云南是我国的重点林区之一，又是森林火灾多发的省份。仅据１９５１－１９８６年３５年间的不完全统计，共发 Forest fires are a kind of natural disasters, with sudden and strong losses, great implementation of the principle of “prevention first, actively extinguishing”, and effective measures and means are required, and aviation forest protection is an effective measure for the competing development of all countries in the contemporary world And means. Yunnan is one of the key forest areas in China and a province where forest fires are frequent. Only according to incomplete statistics from 1951 to 1986 35 years, a total of