贵州山洪灾害防御能力提升研究

Research on Improving the Defense Ability of Mountain Flood Disasters in Guizhou

山洪灾害形成的主要原因与暴雨、台风、洪水以及地形地貌有关。贵州属亚热带湿润季风气候,受大气环流及地形等影响,降雨时空分布不均,整体呈现东多西少的状况,又因特殊的喀斯特山区地形地貌,夜间易受短历时强降雨影响,每年汛期出现山洪灾害的发生率较大,容易危及人民群众的生命安全和财产损失。

The main causes of mountain torrents are related to rainstorm,typhoon,flood and landform.Guizhou belongs to a subtropical humid monsoon climate,which is affected by atmospheric circulation and terrain,resulting in uneven distribution of rainfall in time and space.The overall situation is characterized by more rainfall in the east and less rainfall in the west.Additionally,due to the special terrain of karst mountainous areas,it is susceptible to short-term heavy rainfall at night,resulting in a higher incidence of flash floods during the annual flood season,which can easily endanger the safety of people's lives and property losses.