浅析2001年春夏大旱成因

Causes of the Heavy Drought during the Spring-Summer Period in 2001

中国是一个季风气候显著的国家,降水空间、时间分布严重不均匀,降水东多西少、南多北少且多集中在夏季,呈现南涝北早、东部沿海台风及暴雨多发,西北部干旱、风沙灾害频繁等势态。干旱因出现次数最多、持续时间最长、影响范围最广、对农业造成的直接损失最重及对环境的潜在破坏大而成为我国最大的自然灾害。本文讨论了2001年我国大部分地区春夏大旱的气候成因和天气成因。

China is typical of monsoon climate,with rainfall distributed seriously unbalanced in time and space.Rainfall is comparatively rich in the East and the South,but rare in the West and the North,and most of it is in the summer,resulting in flood in the South but drought in the North,typhoons and rainstorms along eastern coast while frequent drought and windstorms in the Northwest.Drought has become the most serious natural disaster in China for its frequency,duration,affected area,direct damage to agriculture and potential harm to environment.This paper discussed the causes of the heavy drought during the spring-summer period in 2001 which affected most of China.