南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2014年
3期
38-41,54
,共5页
非参数检验%R/S 方法%径流%龙川江流域
非參數檢驗%R/S 方法%徑流%龍川江流域
비삼수검험%R/S 방법%경류%룡천강류역
non2parametric-Mann2Kendall-method%R/S-method%runoff%Longchuan-River-Basin
采用Mann2Kendall非参数检验法对金沙江一级支流龙川江流域1970年-2009年逐月气温、降水及1961年-2008年径流资料进行趋势检验,并运用R/S方法分析流域的年平均气温、降水、径流时间序列的持续性,估算各项指标的H urs t指数,以定量估计未来气候及径流的变化趋势。结果表明:(1)过去几十年来,流域内降水呈上升趋势但不显著,未来降水将持续增加且元谋站降水的增长趋势持续性较强;(2)几十年来,流域气温呈显著上升趋势,未来气温将会持续过去的上升趋势;(3)几十年来,流域径流呈减少趋势,但不显著,未来继续呈下降趋势,但持续性不强。
採用Mann2Kendall非參數檢驗法對金沙江一級支流龍川江流域1970年-2009年逐月氣溫、降水及1961年-2008年徑流資料進行趨勢檢驗,併運用R/S方法分析流域的年平均氣溫、降水、徑流時間序列的持續性,估算各項指標的H urs t指數,以定量估計未來氣候及徑流的變化趨勢。結果錶明:(1)過去幾十年來,流域內降水呈上升趨勢但不顯著,未來降水將持續增加且元謀站降水的增長趨勢持續性較彊;(2)幾十年來,流域氣溫呈顯著上升趨勢,未來氣溫將會持續過去的上升趨勢;(3)幾十年來,流域徑流呈減少趨勢,但不顯著,未來繼續呈下降趨勢,但持續性不彊。
채용Mann2Kendall비삼수검험법대금사강일급지류룡천강류역1970년-2009년축월기온、강수급1961년-2008년경류자료진행추세검험,병운용R/S방법분석류역적년평균기온、강수、경류시간서렬적지속성,고산각항지표적H urs t지수,이정량고계미래기후급경류적변화추세。결과표명:(1)과거궤십년래,류역내강수정상승추세단불현저,미래강수장지속증가차원모참강수적증장추세지속성교강;(2)궤십년래,류역기온정현저상승추세,미래기온장회지속과거적상승추세;(3)궤십년래,류역경류정감소추세,단불현저,미래계속정하강추세,단지속성불강。
In this study, the long2term trends of monthly temperature and precipitation from 1970 to 2009 and annual runoff data from 1961 to 2008 in the Longchuan River Basin were analyzed using the non2parametric Mann2Kendall method. In addition, the R/S method was used to investigate the continuity of the time series data of annual temperature, precipitation, and runoff in the basinandtoestimatetheHurstexponentforeachindex,whichcanbeusedtoestimatethevariationtrendsoftemperature,pre2 cipitation,and runoff quantitatively.The results showed that ( 1) precipitation has an insignificant increasing trend in the basin anditwillcontinuetoincrease,especiallyatYuanmoustation;(2) temperaturehasasignificantincreasingtrendinthebasinand it w ill continue to increase;and ( 3) runoff has an insignificant decreasing trend in the basin and it will continue to decrease but without strong continuity.