桂林理工大学学报2011，Vol.31Issue(2)：202-206,5.
桂林市近50年降雨变化特征分析
Characteristics of Precipitation Change in Guilin Last 50 Years
摘要
Abstract
Annual, wet season and dry season precipitation records, from 1957 to 2007 in Guilin are analyzed by the linear regressive method, the Morlet wavelet transform method and the Mann-Kendall trend test. The linear regressive method is used to analyse the precipitation changes. Increasing tendency of precipitation is found in Cuilin in last 50 years, with 19. 9 mm precipitation increase every 10 years. The Morlet wavelet transform method is used to explore the periodicity of precipitation changes. It indicates that the 20 - 25, 12 -14, 6-7 and 2-4 year are the major period components. The Mann-Kendall is used to detect the abrupt precipitation changes. The results show that an abrupt precipitation happened during 1960s, 1980s and 1990s. The changes of precipitation in Cuilin are caused by multi-factors.关键词
降雨变化/M-K突变分析/小波分析/桂林Key words
precipitation change/ abrupt change analysis/ wavelet analysis/ Cuilin分类
天文与地球科学引用本文复制引用
赵华荣,夏北成,江学顶..桂林市近50年降雨变化特征分析[J].桂林理工大学学报,2011,31(2):202-206,5.基金项目
广西自然科学基金项目(桂科基0991026) （桂科基0991026）
广西环境工程与保护评价重点实验室研究基金项目(桂科能0801Z020) （桂科能0801Z020）
