长江科学院院报 ›› 2012, Vol. 29 ›› Issue (10): 33-36.DOI: 10.3969/j.issn.1001-5485.2012.10.007

• 水资源与环境 • 上一篇    下一篇

1892—2010年间重庆主城降水变化趋势分析

翟 俊1, 郝 静1, 肖海文1, 余德祥2, 秦 川1, 罗雅文1   

  1. 1.重庆大学 三峡库区生态环境教育部重点实验室，重庆  400045； 2.重庆市沙坪坝气象局，重庆  400045
  • 收稿日期:2011-07-23 修回日期:2011-10-11 出版日期:2012-10-01 发布日期:2012-10-18
  • 作者简介:翟俊（1977-），男，江苏省溧阳人，副教授，博士，主要从事城市可持续城市排水设施研究
  • 基金资助:

    国家科技重大专项“水体污染控制与治理”（2009ZX07315-006）

Trend of Precipitation Variation in Main Urban Area of Chongqing City from 1892 to 2010

ZHAI Jun1, HAO Jing1, XIAO Hai-wen1, YU De-xiang2, QIN Chuan1, LUO Ya-wen1   

  1. 1. Key Laboratory of Three Gorges Reservoir Region's Eco-Environment under Ministry of Education and Chongqing University, Chongqing  400045, China; 2. Shapingba Meteorological Bureau, Chongqing  400045, China
  • Received:2011-07-23 Revised:2011-10-11 Online:2012-10-01 Published:2012-10-18

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摘要： 针对近年来普遍存在的城市雨洪灾害问题，利用重庆市沙坪坝气象站1892—2010年的逐月降水量资料，采用线性倾向估计和方差分析法（ANOVA）分析了119 a来重庆主城不同统计时段的降水量及不同等级的降水频率，探讨了近百年来重庆市主城区域降水变化的趋势，以期为城市雨洪灾害防治及城市排水规划的决策提供科学指导。结果表明：119 a来，全年及汛期降水量稍有增加的趋势，年降水量增长向汛期趋于集中;此外，近30 a来，主城区域降水量年际变化幅度有明显的扩大趋势，较大等级降水的发生频率也明显增加;特别是最近10 a，该变幅更加剧烈，连续时段内灾害性气候的发生频率有增长趋势，加剧了城市汛期排水系统的压力。

关键词: 重庆, 降水量, 汛期, 灾害性气候, 雨洪灾害

Abstract: The present research aims to provide scientific basis for storm water disaster prevention and storm water drainage planning in urban area. Based on monthly precipitation data from 1892 to 2010 at Shapingba meteorological station in Chongqing, we analyzed the precipitation and the frequencies of different precipitation grading in different statistical periods in the past 119 years through linear trend estimation and analysis of variance (ANOVA). We also discussed the trend of precipitation variation in Chongqing urban area. Results showed that annual precipitation and precipitation in flood seasons increased slightly. Annual precipitation increase mainly concentrated in flood seasons. In addition, in the past three decades, the range of annual variation had an obvious expanding trend, and the frequencies of large precipitation also had been increasing significantly. Particularly in the recent decade, annual precipitation variation in urban area had been more intensive and the frequencies of catastrophic climate in continuous period had been increasing, which exacerbated the pressures on drainage system in flood seasons. 

Key words:  Chongqing, precipitation, flood season, catastrophic climate, storm and flood disaster

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