松花江流域洪涝灾害成因探源(1949-1985)

The Causes of Flood and Waterlogging Disasters in Songhua River Basin(1949-1985)

1949年至1985年松花江流域水旱灾害中,水灾多于旱灾,涝灾多于洪灾,37年间共有18个水灾年份。造成洪涝灾害的原因有自然和社会两方面,是由降水多、气候寒冷、地形周高中低的自然因素和对松花江流域不合理的开发造成的水土流失,政府重视防洪而轻于治涝等社会因素共同促成的。

Flood disasters were more than drought disasters and waterlogging disasters were more thanfloods in Songhua River basin from 1949 to 1985. Flood disasters happened in 18 years during this period. Bothnatural and social factors could cause the flood and waterlogging disasters. Natural factors include much rain,cold climate and basin topography, while social factors include soil erosion by unreasonable development of theSonghua River basin and the government’s paying more attention to flood control than waterlogging.