水土保持通报2011，Vol.31Issue(6)：121-125,5.
汾河流域汛期降水序列的多时间尺度分析
Time Series Analysis of Precipitation in Flood Season in Fenhe River Basin
摘要
Abstract
Based on the flood season（from June to September） precipitation data from 19 climatic stations within the Fenhe River Basin from 1959 to 2007,and using wavelet transform method,Mann—Kendall and other statistical methods,a time series analysis was made on the precipitation.The results showed that the precipitation in flood season in the Fenhe River basin showed a declining from 1959 to 2007,with an average velocity of-9.79 mm/10 a.However,the precipitation in June increased with a rate of 2.79 mm/10 a,while it decreased with a rate of-6.54,-2.69,-3.36 mm /10 a respectively in July,August and September.This indicated that the precipitation decreased in July and September was the main source of precipitation reduction in flood season.An abrupt change in the flood season precipitation appeared after 1978 when the basin underwent a period of little rain.From 1959 to 2007,there existed 8 to 15 years and 3 to 7 years cycles of precipitation series in flood season and the significant time-scale change were 2,5,10 and 12 year.But the 5 year scale was the main cycle because its oscillation was most strongly.According to the trend of the wavelet transform result,it can be estimated that there will more precipitation in flood season in the near future in the Fenhe River basin.关键词
汛期/降水序列/小波分析/汾河流域Key words
flood season/precipitation series/wavelet analysis/Fenhe River basin分类
天文与地球科学引用本文复制引用
刘宇峰,孙虎,原志华,李艳茹..汾河流域汛期降水序列的多时间尺度分析[J].水土保持通报,2011,31(6):121-125,5.基金项目
长江水利委员会水土保持局项目“南水北调中线水源区水土保持预防保护工程对土壤侵蚀、植被恢复和饮水质量影响的研究” （）
