地理科学 ›› 1987, Vol. 7 ›› Issue (3): 197-206,295.doi: 10.13249/j.cnki.sgs.1987.03.197

• 论文 •    下一篇

长江流域近千年旱涝规律研究

陈海龙   

  1. 长江流域规划办公室 水文局 武汉
  • 出版日期:1987-05-20 发布日期:1987-05-20

A STUDY ON REGULARITY OF DROUGHT AND FLOOD IN THE CHANGJIANG RIVER BASIN DURING LAST 10 CENTURIES

Chen Hailong   

  1. Changjiang River Valley Planning Office, Wuhan
  • Online:1987-05-20 Published:1987-05-20

摘要: 本文探讨了历史时期长江上中游晚近1020年中264个旱涝年的时空分布规律和上游四个地区以及上中下游三个地区旱涝遭遇问题。对旱涝年际分布不均匀和年内季节分配集中以一及遭遇空间分布特点,从季风环流和下垫面特征,论证了它们的客观性和合理性.对旱涝周期和发展趋势等气候特征也作了探讨.

Abstract: According to historical records,there are 264 drought and flood years, occurred in the upper and middle reaches of the Changjiang River during last 1020 years from 961 to 1980.The evolutionary law and developing trend of drought and flood years are studied.The distribution of drought and flood years are non-uniform and the dry and flood seasons in a year are concentrated.At the angle of monsoon circulation,at present the climate in the upper and middle reaches of the Changjiang River is just in the late stage of frequent drought period and the early stage of least flood period.In addition,the cycle of drought and flood and the feature of drought and flood occurred in the upper,middle and lower reaches of the Changjiang River are analyzed.It shows that the short period less than 10 years is in the majority,and the drought and flood occrred most frequently in the middle and lower reaches of the Changjiang River.