人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
14期
13-16
,共4页
降水%径流%趋势分析%西汉水流域%嘉陵江
降水%徑流%趨勢分析%西漢水流域%嘉陵江
강수%경류%추세분석%서한수류역%가릉강
rainfall%runoff%trend analysis%Xihanshui Basin%Jialing River
为了定量研究嘉陵江上游区域的径流变化趋势,选用西汉水流域1969~2011年的降水径流资料,采用线性回归分析、Mann-Kendall统计检验法及Spearman秩次相关检验法,对该流域降雨、径流趋势以及降雨径流关系变化趋势进行分析。结果表明:1969~2011年间,该流域降水有弱减小趋势,径流减少趋势较明显,平均减少达49%。降雨径流关系在1993年后发生明显改变,减少趋势显著,主要是流域内各种水土保持措施综合作用和用水消耗增加所致。
為瞭定量研究嘉陵江上遊區域的徑流變化趨勢,選用西漢水流域1969~2011年的降水徑流資料,採用線性迴歸分析、Mann-Kendall統計檢驗法及Spearman秩次相關檢驗法,對該流域降雨、徑流趨勢以及降雨徑流關繫變化趨勢進行分析。結果錶明:1969~2011年間,該流域降水有弱減小趨勢,徑流減少趨勢較明顯,平均減少達49%。降雨徑流關繫在1993年後髮生明顯改變,減少趨勢顯著,主要是流域內各種水土保持措施綜閤作用和用水消耗增加所緻。
위료정량연구가릉강상유구역적경류변화추세,선용서한수류역1969~2011년적강수경류자료,채용선성회귀분석、Mann-Kendall통계검험법급Spearman질차상관검험법,대해류역강우、경류추세이급강우경류관계변화추세진행분석。결과표명:1969~2011년간,해류역강수유약감소추세,경류감소추세교명현,평균감소체49%。강우경류관계재1993년후발생명현개변,감소추세현저,주요시류역내각충수토보지조시종합작용화용수소모증가소치。
In order to quantitatively sutdy the runoff variation of upper Jialing River region, based on the annual precipitation and runoff data of Xihanshui Basin from 1969 to 2011, the trend of rainfall, runoff and the rainfall-runoff relationship is statisti-cally analyzed by liner regression, Mann-Kendall method and Spearman rank correlation method. The results revealed that the annual precipitation of Xihanshui Basin showed a slight decrease trend, but the runoff declined by 49% in average during re-search period;the rainfall-runoff relationship changed significantly after 1993 due to the influence of soil and water conservation measures and water consumption increase.