| 洛阳市降水量时空变化特征分析 |
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| 引用本文： | 薛建民,苏律文,杨侃,胡虎.洛阳市降水量时空变化特征分析[J].水电能源科学,2016,34(11):13-16. |
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| 作者姓名： | 薛建民 苏律文 杨侃 胡虎 |
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| 作者单位： | 1. 河南省洛阳水文水资源勘测局， 河南 洛阳 471000； 2. 河海大学 水文水资源学院， 江苏 南京 210098 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)(2012CB417006)；“十一五”国家科技支撑计划(2009BAC56B03) |
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| 摘 要： | 基于洛阳市11个代表站1956~2013年日降水量数据,运用滑动平均法、Pettitt检验、小波分析对年降水量进行趋势分析、突变检验和周期分析,研究了洛阳市时间变化特征和空间分布规律。结果表明,近58年洛阳市年平均降水量为670.60mm,降水偏少且集中在夏季;年降水量倾向率为-13.733mm/10a,且呈明显减少趋势;年平均降水量存在15年的主周期,在1985年发生突变;洛阳地区降水量大体呈现出西多东少、南多北少的分布规律,东北部降水量少且减少速率快;洛阳市降水量减少,时空分布极不平衡将成为经济发展的制约性因素。
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| 关 键 词： | 降水量 时空变化 滑动平均法 Pettitt检验 小波分析 洛阳市 |
Temporal and Spatial Variation Characteristics Analysis of Rainfall in Luoyang City |
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| Abstract: | Based on the daily precipitation data of 11representative stations in Luoyang city from 1956 to 2013, moving average method, Pettitt test and wavelet analysis were used to analyze the trend, catastrophe point and periodicity characteristics. Then the temporal and spatial variation characteristics of rainfall in Luoyang City were studied. The results show that the average annual rainfall in Luoyang is 670.60 mm, which is concentrated in summer and less than before. Tendency of annual precipitation rate is 13.733 mm/10a, and it appears a downward trend obviously. The major period of average annual rainfall is 15 years, which occured sudden change in 1985. The rainfall in Luoyang generally presents distribution discipline of west more than east and south more than north. The rainfall in the northeast is less than other area and the reduction velocity is fast. The precipitation reduction and the unbalanced temporal and spatial distribution will become restrictive factors for economic development. |
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