一、综述2006年,全国大江大河水势总体平稳。受暖湿气流和“碧利斯”等台风(含热带风暴,下同)登陆的影响,江南、华南部分地区经历了多次强降雨过程,致使湘江、北江、闽江发生了大洪水,湖南、广东和福建等省部分中小河流发生超过历史纪录的洪水。全国大部分地区山洪、泥石流、滑坡频发。长江流域汛 I. Overview In 2006, the water potential of major rivers in China was generally stable. Affected by the landing of typhoons such as warm and wet air and “Bilis ”, the heavy rainfall occurred in parts of southern and southern China, causing heavy floods in the Xiangjiang, Beijiang and Minjiang rivers , Some of the small rivers in Hunan, Guangdong and Fujian provinces have experienced floods exceeding historical records. Mountain torrents, debris flows and landslides are frequent in most parts of the country. Flood in the Yangtze River Basin