北京的延庆县，河北省的赤城县、怀来县１９９３年开始实施护林防火联防，９年来，２０多公里的三县交界处林区安全无恙。延庆县、赤城县、怀来县三县交界处林区面积较大，实行三县联防以后，加强了林火预测预报网、通讯网、监测了望网、林火阻隔网建设，促进了扑火队伍专业化 Yanqing County in Beijing, Chicheng County in Hebei Province, and Huailai County in 1993 started to carry out fire prevention and fire prevention work. In the past nine years, more than 20 kilometers of jungle at the junction of the three counties have been unharmed. Yanqing County, Chicheng County, Huailai County, three counties at the junction of a larger forest area, the implementation of the three counties in the defense after strengthening the forest fire forecast network, communications network, monitoring Wangwang, fire blocking network construction, and promote the fire Team specialization