Analysis on spatial-temporal characteristics of interannual variation of maximum daily precipitation in Jiangxi Province

On the basis of the daily precipitation data statistics of 17 meteorological stations from 1953 to 2010 in Jiangxi Province, this paper studied the interannual variation characteristics of maximum daily precipitation and its spatial-temporal characteristics in Jiangxi Province with the application of GIS technology and Mann-Kendall (M-K) statistic method. The results showed that there was a slightly constant rising tendency of monthly average maximum daily precipitation in flood duration in Jiangxi from 1953 to 2010, especially in the Southern Jiangxi with the confidence of 90%; For the whole province, the abrupt change of the average monthly maximum daily precipitation in flood duration took place in 1992, with the confidence of 95%; moreover, the confidence of Eastern, North Central and Southern were 95%,95% and 90%.