It makes use of 56 stations precipitation gross data in the half-year of summer from April to October in the loess plateau,analyzing their basal space distributing character and average gross precipitation with the EOF and REOF methods,and analyzing the time change character with variance analysis method.
利用黄土高原56站夏半年(4~10月)降水总量资料,分析了其空间基本分布特征,用EOF、REOF方法对平均降水总量进行了气候分区,用方差分析方法分析了其时间变化特征,对比分析了多雨年和少雨年降水对冬小麦及玉米产量的影响。