【摘要】：為分析合肥市的降水變化規(guī)律,根據(jù)合肥市1951~2015年共65年的逐月降水資料,采用線性傾向估計(jì)法、累積距平法、Mann-Kendall法和Morlet小波分析法分析了合肥市降水年際變化趨勢(shì)和周期特征,采用不均勻系數(shù)、完全調(diào)節(jié)系數(shù)和集中度等指標(biāo)分析了合肥市降水的年內(nèi)分配特征。結(jié)果表明,合肥市降水量呈不顯著增加趨勢(shì),3~5、9、10、12月的降水量呈減少變化,其余各月降水量呈增加變化,僅有6月降水量變化趨勢(shì)通過(guò)了90%置信度檢驗(yàn);15年主周期尺度下的降水豐枯交替明顯;降水年內(nèi)分配較不均勻,主要集中于夏季,年內(nèi)分配各特征指標(biāo)呈微弱增加趨勢(shì)。研究成果可為水資源管理工作提供指導(dǎo)。
[Abstract]:In order to analyze the precipitation variation law of Hefei City, according to the monthly precipitation data of 151 / 2015 in Hefei City, linear tendency estimation method and cumulative anomaly method were used. Mann-Kendall method and Morlet wavelet analysis method are used to analyze the interannual variation trend and periodic characteristics of precipitation in Hefei. The annual distribution characteristics of precipitation in Hefei are analyzed by using the indexes of inhomogeneity coefficient, complete adjustment coefficient and concentration degree. The results showed that the precipitation in Hefei showed no significant increase trend, but the precipitation decreased in 3 鈮，

本文編號(hào)：2474562