人民黄河2018，Vol.40Issue(5)：21-27,7.DOI:10.3969/j.issn.1000-1379.2018.05.005
陕西省武功地区1961—2015年降水量变化特征
Variation Characteristics of Precipitation in Wugong Region of Shaanxi Province from 1961 to 2015
摘要
Abstract
The shortage of precipitation and the uneven spatial-temporal distribution threatened the development of agricultural production in the present situation. The basic characteristics of precipitation change in Wugong area of Shaanxi Province. Based on the precipitation data in this area,the climatic tendency,the 5-year moving average,the cumulative anomaly curve and the Mann-Kendall method were used to ana-lyze the characteristics of precipitation variation of the inter-annual,winter wheat season and summer maize season in Wugong area from 1961 to 2015. At the same time, the annual precipitation of the area was analyzed by wavelet analysis periodic characteristics of time series. It shows that the inter-annual precipitation and the seasonal precipitation of winter wheat show a decreasing trend,the seasonal precipitation of summer maize shows an increasing tendency in Wugong area and the climatic tendency rates is -1.734, -8.775 and 8.074 mm/(10 a)re-spectively. The inter-annual,summer maize and winter wheat seasons precipitation coefficient of variation is 0.3,0.4 and 0.2 respectively. In the period from 1961 to 2015,in the study time domain,the last mutation occurs in 2013-2014,1967-1968 and 2002-2003 respectively. They are not significant to reduce the precipitation. Through the analysis,the 11 a,6 a and 18 a time scale is the first,second and third ma-jor period of the change of the annual precipitation and the average period is 9 a,5 a and 13 a or so,respectively.The annual precipitation in the study area shows the periodicity of less-more alternating and the precipitation is expected to decrease in 2014-2030.关键词
Mann-Kendall法/小波分析/降水量/武功地区/1961—2015年Key words
Mann-Kendall analysis/precipitation/wavelet analysis/Wugong area/year from 1961 to 2015分类
天文与地球科学引用本文复制引用
徐芳平,马孝义,陈超飞,于志刚..陕西省武功地区1961—2015年降水量变化特征[J].人民黄河,2018,40(5):21-27,7.基金项目
公益性行业(农业)科研专项(201503124). （农业）
