| 本溪山区极端降水指数的变化特征分析 |
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| 引用本文： | 吉 奇,赵 雷,高 巍,林 双.本溪山区极端降水指数的变化特征分析[J].中国农学通报,2015,31(8):169-173. |
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| 作者姓名： | 吉 奇 赵 雷 高 巍 林 双 |
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| 作者单位： | 本溪市气象局,桓仁县气象局,本溪市气象局,本溪市气象局 |
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| 基金项目： | 基金项目：本溪市气象局“本溪市水资源开发利用研究”(BQ2013001)。 |
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| 摘 要： | 为了进一步探讨降水及洪涝灾害发生规律,合理开发利用本溪山区水资源,利用本溪草河口气象站1953—2012年逐日降水资料,分析了本溪山区6个极端降水指数的变化趋势。结果表明:本溪山区年降水量年际差异较大,年降水量无显著的变化趋势;四季降水量也无明显的变化趋势。年降水日数呈明显的减少趋势,从1974年本溪山区降水日数开始减少;除春季降水日数变化趋势不明显外,其他各季均呈显著的减少趋势变化;夏季在1976年,秋季在1987年发生突变。降水强度无明显的变化趋势;最大5日降水量趋势变化不明显,但年际间差异较大;年极端降水事件无显著的变化趋势,20世纪50、60、80年代为偏多时期。
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| 关 键 词： | 极端降水指数 气候变化 本溪山区 |
| 收稿时间： | 2014/11/24 0:00:00 |
| 修稿时间： | 2015/1/19 0:00:00 |
Analysis of Variation Characteristics of Extreme Precipitation Index in Benxi Mountainous Area |
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| Ji Qi,Zhao Lei,Gao Wei and Lin Shuang.Analysis of Variation Characteristics of Extreme Precipitation Index in Benxi Mountainous Area[J].Chinese Agricultural Science Bulletin,2015,31(8):169-173. |
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| Authors: | Ji Qi Zhao Lei Gao Wei and Lin Shuang |
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| Institution: | Meteorological Bureau of Benxi City, Benxi Liaoning,Meteorological Bureau of Huanren County, Huanren Liaoning ),Meteorological Bureau of Benxi City, Benxi Liaoning,Meteorological Bureau of Benxi City, Benxi Liaoning |
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| Abstract: | In order to further explore the occurrence regularity of precipitation and flood disaster, develop and utilize the water resources in Benxi Mountainous area, according to daily precipitation data of Caohekou meteorological station in Benxi from 1953 to 2012, 6 extreme precipitation indexes were analyzed. The results showed that the annual precipitation had significant inter-annual fluctuations, but without significant tendencies, the seasonal precipitation had no obvious change tendency. The annual precipitation days had displayed a decreasing trend since 1974, except the spring precipitation days which had no obvious variation trend, other seasons showed a significant decreasing tendency. The mutation occurred in the summer of 1976 and in the autumn of 1987. Rainfall intensity had no obvious variation trend, the variation of the maximum rainfall of consecutives 5 days was not obvious, but inter-annual difference was significant. The annual extreme precipitation events showed no significant variation trend, periods of more precipitation were 50s, 60s and 80s of the 20th century. |
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| Keywords: | extreme precipitation index climate change Benxi Mountainous area |
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