星星之火,便可使万顷森林化为灰烬。1933年8月美国俄勒冈州发生一起面积最大、破坏最惨的火灾(季拉穆克火灾)持续八天,蔓延十万四千公顷面积。现在美国由于闪电引起的森林火灾每年烧毁大面积森林,造成直接损失10亿美元。由于人们认识到火灾对森林的严重危害,千方百计地防止火灾发生,一旦发生森林火灾,则尽量使损失降低到最小限度。美国开始将人造卫星、自动化气象站和自动闪电监测 Star of fire, can make million ares of forest into ashes. In August 1933, one of the largest and most devastating fires (Oregon) in Oregon sustained a total of 84,000 hectares of land (eight days in duration) for eight days. Now the United States burns large areas of forests each year due to lightning-induced forest fires, causing direct losses of one billion U.S. dollars. As people recognize the serious harm of fire to the forest, do everything possible to prevent the occurrence of a fire, in the event of a forest fire, try to minimize the loss. The United States began to satellite, automated weather stations and automatic lightning monitoring