中国农业气象

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近800年唐山地区干旱灾害研究

龚宇;花家嘉;王爱军;   

  1. 唐山市气象局;河北省气象与生态环境实验室;
  • 出版日期:2010-04-10 发布日期:2010-04-10
  • 基金资助:
    唐山市科技发展计划项目(08120205A);; 唐山市气象局创新项目(QX2007KY0702)

Research on the Drought Disasters in Tangshan Region over the Recent 800 Years

GONG Yu1,2,HUA Jia-jia1,WANG Ai-jun1(1.Tangshan Meteorological Bureau,Tangshan 063000,China; 2.Laboratory of Meteorological and Ecology Environment,Hebei Province,Shijiazhuang 050021)   

  • Online:2010-04-10 Published:2010-04-10

摘要: 对历史文献记载的公元1164-2000年唐山地区干旱灾害资料进行系统的整理和分析,研究了该区域的旱灾变化规律。结果显示:分析期旱灾共发生127次,平均每6.6a发生1次。轻度旱灾、中度旱灾、大旱灾、特大旱灾发生次数分别占旱灾发生总数的45.7%、25.2%、17.3%、11.8%。从时间段来看唐山旱灾发生频数呈现极少、多、少、极多的特点(对应时间段分别为公元1164-1487年、1488-1700年、1701-1800年、1801-2000年),平均发生1次的时间间隔为46a、5a、10a、2.5a。本地区旱灾的产生与历史时期的气候异常变化和降水分布变化特征是一致的。

关键词: 唐山, 干旱灾害等级, 成因

Abstract: In order to study the regularity of drought damage at Tangshan region,the data of drought from A.D. 1164 to 2000 in this area was collected and analyzed in the paper. The results showed that drought struck this area 127 times in total and occurred every 6.6 years. The low-grade,middling-grade,serious-grade and the worst-grade of drought damage according to the percentage of happening times,were 45.7%,25.2%,17.3%,11.8%,respectively. The frequency of drought was marked into four levels:very little,little,much and very much in according to time interval( 46 years,5 years,10 years and 2.5 years respectively). The frequency of the drought after A.D. 1800 was 3.6 times than it was before. The emergence of drought was in line with the climate abnormal change and rainfall distribution character.

Key words: Tangshan, Tangshan, Drought damage grade, Drought damage causes