文献类型： 外文期刊
作者： Jia, Shijing 1 ; Han, Suqing 1 ; Wang, Huijun 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Shijiazhuang, Hebei, Peoples R China
关键词： Agriculture region;Precipitation;Mann-Kendall;Heibei
期刊名称：ADVANCES IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-6
ISSN： 1022-6680
年卷期： 2012 年 518-523 卷
页码：
收录情况： SCI
摘要： Using Visual Basic, in the range of seven irrigation managing regions in Hebei, the research analyzed annual and quarterly features of precipitation in the recent 51 years, and using Mann-Kendall Non-Parametric Test, analyzed annual and quarterly trend of precipitation of every agricultral region. The research finds that there are large differences between seven agricultural regions, except Inland River Region, precipitation in the other regions shows decreasing trend each year. The research about seasonal precipitation shows that Inland River Region has more precipitation in autumn, but other regions have more precipitation in summer; the precipitation increases in spring in all agricultral regions, but decreases in summer except Inland River Region, increases in autumn except Yanshan Hill Region, and increases in winter in all the agricultural regions.
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