Statistics and Causes of Historical Drought Disasters in Upper Reaches of Hanjiang River

REN Li-li; YIN Shu-yan; PENG Wei-ying

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Statistics and Causes of Historical Drought Disasters in Upper Reaches of Hanjiang River

- Statistics and Causes of Historical Drought Disasters in Upper Reaches of Hanjiang River
- Bulletin of Soiland Water Conservation Vol. 32, Issue 1, Pages: 129-133(2013)
- 作者机构：
  
  陕西师范大学旅游与环境学院,陕西,西安,710062
- 作者简介：
- 基金信息：
- DOI：
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- Published：2013
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REN Li-li, YIN Shu-yan, PENG Wei-ying. Statistics and Causes of Historical Drought Disasters in Upper Reaches of Hanjiang River[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 129-133.
DOI：

REN Li-li, YIN Shu-yan, PENG Wei-ying. Statistics and Causes of Historical Drought Disasters in Upper Reaches of Hanjiang River[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 129-133. DOI：

摘要

通过对历史文献资料的整理与统计分析

对汉江上游193BC—2000AD近2 200a干旱灾害的等级、发生频率、成因进行了研究。结果表明

汉江上游在193BC—2000AD

共发生旱灾431次

平均每5.09a发生1次。其中

干旱灾害以中度旱灾为主

占旱灾总数的42.5%;其次是轻度旱灾

占旱灾总数的35.0%;特大旱灾和大旱灾发生的频率较低

各占旱灾总数的12.3%和10.2%。干旱灾害发生的频率具有明显的波动性

并且随着历史进程的发展

在波动中有上升的趋势

清代后期到现代

是汉江上游旱灾发生频率最高的时期。气侯变化、降水、地形以及人为因素是导致汉江上游地区发生旱灾的主要原因。

Abstract

The historical document of drought disasters in the upper reaches of the Hanjiang River during theperiod from 193BC to 2000AD was collected and analyzed.The grade

frequency and causes of drought disasters in the area during the period were focused on.It was found that 431times of drought disasters occurredin the area during the period

approximately once every 5.09years on average.Drought disasters were mainly the moderate ones that accounted for 42.5% of the total

followed by slight ones that accounted for35.0%of the total.The occurring frequency of extremely serious and serious ones accounted for 12.3% and10.2%of the total

respectively.Frequency of drought disasters was characterized by obvious fluctuationand there was a rising trend in fluctuation with the historical development. The late Qing dynasty to modernhad the highest frequency.As a result of climate change

precipitation

terrain factors and human factors ledto drought disasters occurred in the upper reaches of the Hanjiang River.

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Related Institution

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