| 540年来宁夏旱涝分区及演变趋势的诊断分析 |
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| 引用本文： | 冯建民,梁旭,郑广芬,张冰.540年来宁夏旱涝分区及演变趋势的诊断分析[J].干旱区资源与环境,2011(7):69-74. |
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| 作者姓名： | 冯建民 梁旭 郑广芬 张冰 |
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| 作者单位： | 宁夏气象防灾减灾重点实验室;宁夏气候中心; |
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| 基金项目： | 2009年中国气象局气候变化专项项目(CCSF-09-04); 2011年中国气象局气候变化专项(CCSF2011-26)资助 |
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| 摘 要： | 应用近500年的旱涝史料和现代降水量资料,对宁夏引黄灌区、中部干旱带和南部山区三个区域进行时段为百年的旱涝特征及演变趋势的诊断分析;通过11年旱涝等级序列滑动平均来探讨其周期变化规律及变化趋势,采用交叉谱分析方法,得到了太阳活动对宁夏地区旱涝的影响尺度、幅度及响应时间,以说明旱涝变化与这些因素的相关程度;并采用功率谱分...
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| 关 键 词： | 旱涝 诊断分析 外强迫因子 显著周期 |
Division and diagnostic analysis of drought and flood in Ningxia for the last 540 years |
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| FENG Jianming,LIANG Xu,ZHENG Guangfen,ZHANG Bing.Division and diagnostic analysis of drought and flood in Ningxia for the last 540 years[J].Journal of Arid Land Resources and Environment,2011(7):69-74. |
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| Authors: | FENG Jianming LIANG Xu ZHENG Guangfen ZHANG Bing |
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| Institution: | FENG Jianming1,2,LIANG Xu1,ZHENG Guangfen2,ZHANG Bing1(1.Key Laboratory of Meteorological Disaster Preventing and Reducing in Ningxia,Yinchuan 750002,P.R.China,2.Ningxia Climate Center,P.R.China) |
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| Abstract: | Using historical data of drought and flood and morden precipitation and applying moving-average of 11 years,we analyzed and diagnosed the characteristic and trend of change of drought and flood in Yellow River irrigated area,middle arid area and south mountain part of Ningxia.Utilizing Cross-Spectrum,we found the solar activity effected on scale and amplitude and response time of change of drought and flood,and explained the relevance between these factors and change of drought and flood.Using power spectra... |
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| Keywords: | drought and flood diagnostic analysis extra-forcing significant period |
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