摘要
利用气候倾斜率分析和小波分析等方法,从年际和季节变化角度出发,选取平均降水量、降水日数、降水强度和日最大降水量等指标,对茌平县1961—2015年的降水量和降水强度进行了分析。结果表明:近54年来,茌平县多年平均降水量为596.2 mm;年、季降水量、降水日数呈缓慢下降的趋势,而降水强度和日最大降水量呈缓慢上升的趋势。小波分析显示降水量和降水日数呈现出明显的周期性。
Using climate ramp rate analysis and wavelet analysis,from the interannual and seasonal variation perspective,selected average precipitation,days of precipitation,precipitation intensity and daily maximum precipitation and other indicators to analyze precipitation and precipitation intensity of Chiping County from 1961 to 2015.The results showed that in recent 54 years, Chiping annual average rainfall of 596.2 mm; annum and seasonal precipitation ,precipitation days was a slow downward trend ,while the daily maximum precipitation intensity and rainfall showed a slow upward trend. Wavelet analysis showed that precipitation and precipitation days showed a significant cyclical.
出处
《现代农业科技》
2016年第6期229-230,233,共3页
Modern Agricultural Science and Technology
关键词
降水量
降水强度
变化趋势
小波分析
山东茌平
precipitation
rainfall intensity
trends
wavelet analysis
Chiping Shandong
