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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (5): 125-130.doi: 10.11924/j.issn.1000-6850.casb15090087

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

青海省汛期极端强降水特征及影响

冯晓莉,刘彩红   

  1. 青海省防灾减灾重点实验室,青海省气候中心
  • 收稿日期:2015-09-22 修回日期:2015-10-21 接受日期:2015-10-23 出版日期:2016-02-19 发布日期:2016-02-19
  • 通讯作者: 刘彩红
  • 基金资助:
    青海省气象局气象科学技术研究项目“黄南地区气候特征的多尺度分析及预测”(20150401)

Characteristics of Extreme Heavy Precipitation Events and Their Impacts in Qinghai Province

冯晓莉 and 刘彩红   

  • Received:2015-09-22 Revised:2015-10-21 Accepted:2015-10-23 Online:2016-02-19 Published:2016-02-19

PDF (PC)

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摘要： 为了研究青海省极端强降水在全球变暖背景下的变化及影响，利用青海省1961—2014 年汛期（5—9 月）40 个台站的逐日降水资料，分析了汛期极端强降水事件的变化趋势及非均匀性分布特征，并对极端强降水事件的可能影响进行探讨，以期为抗汛减灾提供决策参考。结果表明：近54 年青海省汛期极端强降水对汛期降水量的贡献呈增长趋势，极端强降水发生的频次增加、强度加重；7 月中旬至8 月中旬是全省极端强降水的多发期，在东部农业区中东部及青南地区东部等极端强降水多发地，应重点关注洪水、滑坡及泥石流等地质灾害。

关键词: 农村居民点整理, 农村居民点整理, 经济限制性, 修正系数

Abstract: The paper aims to explore the characteristics of extreme heavy precipitation event and impacts in Qinghai province under the background of global warming in order to provide the measures for flood control and mitigation. Based on the daily precipitation data of 40 meteorological stations during the flood season (from May to September) in the period of 1961-2014 in Qinghai province, the spatial distribution and temporal inhomogeneity features of extreme heavy precipitation events were analyzed. Furthermore, the possible impacts of extreme heavy precipitation events were discussed. The results showed that: the intensity and frequency of extreme heavy precipitation events presented an upward trend, and the ratio of extreme heavy precipitation events to the total precipitation increased during the flood season (from May to September) in the period of 1961-2014 in Qinghai Province. The peak of extreme heavy precipitation events came up from mid July to mid August in the mid-eastern part of the eastern agricultural region and southeastern part of Qinghai Province, that the risk of floods, landslides and debris flows disaster increased.