全 球气候的逐渐变暖 ,由厄尔尼诺及拉尼娜现象引起气候变动的加剧 ,森林面积不断增加 ,林区人为活动越来越频繁。这些因素都有使森林火灾日益严重的趋势。“九五”前四年与“八五”同期相比 ,我区森林火灾次数、受害森林面积、森林火灾受害率分别上升９．７%、１１２．６%及０ The gradual warming of the global climate caused by the intensification of climate change caused by the El Niño and La Niña phenomena, the continuous increase of forest area and the increasing man-made activities in the forest area. These factors all have the tendency to make the forest fire worse and worse. In the first four years of the Ninth Five-year Plan period, the number of forest fires, the area affected by forest fires and the forest fire damage rate increased by 9.7%, 112.6% and 0% respectively compared with the “Eighth Five-Year Plan”