With a wide and complicated territory, a large span of latitude from the south to the north and distinct monsoon variations, China is one of those areas afflicted with frequent meteorological disasters in the world, such as drought, flood, typhoon, megatherm, cool injury, early frost and snow, which have taken on an aggravating tendency in recent years. In 1991, the ChangjiangHuaihe Region (CHR) witnessed a severe, sustained flood rarely seen in the past decades. In 1994, floods attacked South China, North China and Northeast China, whereas the CHR suffered from the disaster of drought and the coastal areas from frequent typhoons, which caused great damages to the comparatively better-developed eastern region.