摘要
分析了南方干旱的特点,认为南方旱情呈现出连续无雨时间长、干旱范围大、集中于夏秋或秋冬季、灾情重的特点.其发生的原因既与我国地区局部环流有关,也与全球大尺度大气环流背景有关;既有气象原因,也有生态、人为原因.预测和防治干旱必须重视人类活动影响和全球气候变化因素.
The drought in South China has the characteristics of lasting a long period of time, involving a giant spread of land, breaking out generally in summer to autumn or autumn to winter and exerting great damages to such regions. The aridity index of Jiangxi Province and in high temperature period was analysed in the paper. The drought was initiated be disadvantageous meteorological factors, unfavourable acological environment and unadvisable human activities. In taking precautions against such calamity close attention should be paid to the above effects.
出处
《上海师范大学学报（自然科学版）》
2005年第3期80-86,共7页
Journal of Shanghai Normal University(Natural Sciences)
关键词
南方干旱
干旱指数
对策
southward draught
aridity index
countermeasure
