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河道内生态环境流量指为保护河道内生态环境,需要保留在河流内的水量及过程。该文以东塔产卵场河段为研究对象,采用逐月频率法、RVA法、湿周法、7Q10法、Q90法、Tennant法等多种方法计算河道内生态环境流量,并对不同方法的计算成果进行对比分析。经分析认为,逐月频率法计算结果体现了河流水文情势丰枯变化特点,符合河流生态系统中各种生物各生命阶段对水量的不同需求,在现有调度水平下应用条件及效果较好。
The ecological flow in the river channel refers to the amount and process of water that needs to be kept in the river to protect the ecological environment in the river channel. In this paper, the eastern section of the spawning ground was taken as the research object. The ecological flow in the river channel was calculated by monthly frequency method, RVA method, wet cycle method, 7Q10 method, Q90 method and Tennant method. The results of the comparative analysis. The analysis shows that the result of monthly frequency method reflects the characteristics of fluvial and hydrological changes in rivers and rivers, accords with the different demands of different life stages of various organisms in river ecosystem, and the application conditions and effects are good under the existing dispatching level.