CAJ | 학술논문

采用北洛河交口河水文站1964-2008年实测月径流量资料，对径流年内分配的不均匀性、集中程度、变化幅度进行了分析；应用Mann-Kendall方法分析了北洛河径流量的年际、季节变化趋势，并对丰水期和枯水期的径流量进行了突变分析。结果表明：①北洛河河川径流量在20世纪60、70年代的年内分配比较集中，进入21世纪后年内分配相对均匀，径流量主要集中在7-9月；②北洛河年径流量呈明显减小趋势，冬季的减小趋势不显著，其他季节的减小趋势均十分明显；③北洛河年径流量在1973年、2003年发生两次突变，丰水期和枯水期的径流量变化趋势基本与全年的保持一致，但丰水期在1983年多出一次突变，枯水期在1982年、1994年多出两个突变点，径流量变化的总体趋势都是减小的。
채용북락하교구하수문참1964-2008년실측월경류량자료，대경류년내분배적불균균성、집중정도、변화폭도진행료분석；응용Mann-Kendall방법분석료북락하경류량적년제、계절변화추세，병대봉수기화고수기적경류량진행료돌변분석。결과표명：①북락하하천경류량재20세기60、70년대적년내분배비교집중，진입21세기후년내분배상대균균，경류량주요집중재7-9월；②북락하년경류량정명현감소추세，동계적감소추세불현저，기타계절적감소추세균십분명현；③북락하년경류량재1973년、2003년발생량차돌변，봉수기화고수기적경류량변화추세기본여전년적보지일치，단봉수기재1983년다출일차돌변，고수기재1982년、1994년다출량개돌변점，경류량변화적총체추세도시감소적。
The distribution non-uniform coefficient,concentration degree and variation amplitude of the Beiluo River runoff were detailedly calculat-ed based on the monthly runoff data measured at Jiaokouhe Hydrological Station from 1964 to 2008. The method of Mann-Kendall rank correlation was used to analyze the annual and seasonal runoff change trend and mutation of high and low flow periods. The results show that:a)The annual distribution of runoff of Beiluo River is relatively concentrated in 1960s and 1970s,and then in the 21st century the annual distribution is relatively uniform and runoff mainly concentrated in July,August and September;b)Trend of Beiluo River annual runoff is significantly decreasing,the de-crease trend in winter is not significant and in the other seasons is very obvious;c)The annual runoff mutates mainly in 1973 and 2003,the trends of the wet season and dry season are consistent with the whole year,but there is a mutation in 1983 in wet season and two mutations in 1982 and 1994 in dry season,and the overall trend of runoff is reduced.