| 基于GIS的大连春旱频率空间分布 |
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| 引用本文： | 侯彦泽,牛桂萍,祝青林,尹远渊,于蕙箐.基于GIS的大连春旱频率空间分布[J].安徽农业科学,2016,44(24). |
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| 作者姓名： | 侯彦泽 牛桂萍 祝青林 尹远渊 于蕙箐 |
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| 作者单位： | 辽宁省大连市气象台,辽宁大连,116001;辽宁省瓦房店市气象局,辽宁瓦房店,116300 |
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| 摘 要： | 利用大连地区1990~2015年39个土壤水分观测站数据,采用墒情指标评价法作为干旱评估标准,借助地理信息系统中的Kring方法进行空间化,绘制大连地区春季干旱频率图,在此基础上分析了大连地区春季干旱的空间分布特征。结果表明,大连地区春旱具有显著的地区性。瓦房店北部、金州发生频次最高,属于春旱高发区;庄河最低,属于春旱低发区;旅顺和普兰店局部属于春旱易发区。
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| 关 键 词： | 地理信息系统 春旱 频率 空间分布 |
Spatial Distribution of Spring Drought Frequency Based on GIS Technique in Dalian |
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| Abstract: | Using the data of 39 soil moisture observation stations in Dalian area during 1990-2015, adopting moisture index evaluation method and Kring method of GIS, spring drought frequency diagram of Dalian was obtained.On the basis of this, spatial distribution characteristics of spring drought in Dalian were analyzed.The results showed that spring drought in Dalian has significant regional feature.North of Wafangdian and Jinzhou belong to highest frequency area of spring drought, Zhuanghe is the lowest, Lushun and parts of Pulandian belong to spring drought prone area. |
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| Keywords: | GIS Spring drought Frequency Spatial distribution |
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