广西浦北县1967～2006年降水量特征统计分析

摘要

The precipitation of a period of ten days from 1967 to 2006 in Pubei County,Guangxi was analyzed by the methods of accumulative anomaly and linear trend.The results showed that the annual precipitation was extremely unstable and the annual variation was obvious.The mean annual precipitation decreased by 5.697 0 mm every year mainly because the precipitation in spring and autumn decreased.%采用累积距平和线性趋势等方法,对广西浦北县1967～2006年逐旬降水量进行了分析.结果表明:近40 a来浦北县年降水极不稳定,年际变化明显;年平均降水量的总变化趋势是每年减少5.697 0 mm,原因主要是由春、秋2季降水量减少引起的.