历史时期汉江上游旱灾统计及成因分析
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国家社会科学基金重点项目"历史时期汉江上游极端性气候水文事件及其社会影响研究"(11AZS009);国家自然科学基金重点项目"汉江上游(南水北调水源区)万年尺度古洪水水文学研究"(41030637);教育部博士点基金优先发展领域项目"黄河晋陕峡谷全新世古洪水事件及其对于全球化的响应规律研究"(20110202130002);中央高校基本科研业务费专项基金项目"气候变化对陕西省经济作物物候影响研究"(GK201002015)


Statistics and Causes of Historical Drought Disasters in Upper Reaches of Hanjiang River
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    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    The historical document of drought disasters in the upper reaches of the Hanjiang River during theperiod from 193BC to 2000AD was collected and analyzed.The grade,frequency and causes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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任利利,殷淑燕,彭维英.历史时期汉江上游旱灾统计及成因分析[J].水土保持通报,2013,(1):129-133,145

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历史
  • 收稿日期:2012-01-26
  • 最后修改日期:2012-04-05
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  • 在线发布日期: 2014-11-12
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