CAJ | 학술논문

从具有生态学意义的流量、频率、出现时间、持续时间和变化率等5种水文要素出发，采用水文变化指标体系定量评估了黄河水量统一调度与调水调沙对河口段生态水文情势的影响，讨论了河口环境水流需求以及调水调沙后水文情势对环境水流的满足程度。研究结果表明，与水量统一调度前相比，水量统一调度与调水调沙后利津断面水文情势有所改善，年极小值流量明显增加，但是水文过程变化率降低，洪水漫滩过程消失，水文过程趋于平缓。目前河口段水文情势能够满足枯水期适宜生态流量需求，汛前4-5月关键期无法满足适宜生态流量与流量脉冲过程，汛期除缺乏洪水脉冲过程外，基本能够满足高流量输沙需求。
종구유생태학의의적류량、빈솔、출현시간、지속시간화변화솔등5충수문요소출발，채용수문변화지표체계정량평고료황하수량통일조도여조수조사대하구단생태수문정세적영향，토론료하구배경수류수구이급조수조사후수문정세대배경수류적만족정도。연구결과표명，여수량통일조도전상비，수량통일조도여조수조사후리진단면수문정세유소개선，년겁소치류량명현증가，단시수문과정변화솔강저，홍수만탄과정소실，수문과정추우평완。목전하구단수문정세능구만족고수기괄의생태류량수구，신전4-5월관건기무법만족괄의생태류량여류량맥충과정，신기제결핍홍수맥충과정외，기본능구만족고류량수사수구。
The Indicators of Hydrological Alteration (IHA) that includes five flow components (discharge, frequency,timing,duration and rate of change) with great ecological significance are adopted to estimate the effects of the integrated water regulation and water-sediment regulation of the Yellow River on the eco-hy-drology of the river estuary. The demands for environmental flows and satisfaction degree of current hydrolog-ical regime were discussed. The results indicate that estuarine hydrologic regime has been improved effective-ly due to the integrated water regulation and water-sediment regulation. While the rate of change de-creased;the flood pulse process disappeared and the hydrologic process became flat. The hydrological re-gime is able to meet the appropriate ecological flows during the dry period and that of the flood period could achieve the river channel scouring except for the lack of flood pulse process. While, during April to June the hydrological processes are incapable of meeting the ecological flows and short of the flow pulsing for fish reproduction.