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。
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.
出处
《安徽农业科学》
CAS
2016年第24期186-187,218,共3页
Journal of Anhui Agricultural Sciences
关键词
地理信息系统
春旱
频率
空间分布
GIS
Spring drought
Frequency
Spatial distribution
作者简介
侯彦泽（1988-），男，天津人，助理工程师，从事农业气象研究。
