CAJ | 학술논문

介绍了黄河河口镇-龙门区间的概况，利用实测资料对2000-2010年该区间的水沙特点进行了分析。结果表明：①与1956-1999年平均相比，2000-2010年多年平均降水量变化不大，但主汛期降水量偏小13％，较大降水量发生天数减少，小降水量发生天数增多，降水强度明显减弱；②8月水、沙量减少最多，分别占年减少量的32％、46％；③主汛期降水量减幅小于径流量的，径流量减幅小于输沙量的；④主汛期降水量与实测水、沙量的关系均发生了变化，与1969年以前相比，2000年以后降水量增大，径流量变化不大，而实测径流量相同的条件下输沙量明显减少。
개소료황하하구진-룡문구간적개황，이용실측자료대2000-2010년해구간적수사특점진행료분석。결과표명：①여1956-1999년평균상비，2000-2010년다년평균강수량변화불대，단주신기강수량편소13％，교대강수량발생천수감소，소강수량발생천수증다，강수강도명현감약；②8월수、사량감소최다，분별점년감소량적32％、46％；③주신기강수량감폭소우경류량적，경류량감폭소우수사량적；④주신기강수량여실측수、사량적관계균발생료변화，여1969년이전상비，2000년이후강수량증대，경류량변화불대，이실측경류량상동적조건하수사량명현감소。
This paper introduced the water and sediment situation in Hekouzhen-Longmen reach of the Yellow River. The variation of runoff and sediment of this reach was analyzed based on the measured data in 2000-2010. The following conclusions have been drawn:a)In contrast with the multi-year average precipitation,the amount of precipitation in 2000-2010 is little difference. However,the precipitation in main flood season reduces by 13%. The occurrence frequency of large precipitation decreases and small precipitation increases. The precipitation intensity falls down. b)The damping of runoff and sediment in August is the highest,which accounts for 32% and 46% of the annual reduction. c)The ascending sort of the reduction in main flood season is precipitation,runoff and sediment. d)The function relationship between the precipitation and runoff and sediment has changed. Compared with that before 1969,the runoff has little changes though the precipitation increases after 2000. And under the same runoff condition,the sediment amount has an obvious decrease.