Variation of the hydrologic conditions of the Hengshi and Feilaixia hydrologic stations in the middle reaches of Beijiang River from 1954 to 2022 is analyzed using the Indicators of Hydrologic Alteration(IHA)and the Range of Vari-ability Approach(RVA).The influence of the regulation of Feilaixia Reservoir on the low and dry water condition of Beijiang River is analyzed specifically.The results show that Feilaixia Reservoir is of no influence on the long-time scale runoff processes of Beijiang River as its capacity coefficient is relatively small.While it is of significant influences on the shorter time scale runoff processes,as the flow process becomes fragmented with steep rise and fall and frequent switc-hing.During the dry season,the influence is more significant.
关键词
北江/水文情势/水文变异指数(IHA)/变化范围法(RVA)
Key words
Beijiang River/hydrological condition/Indicators of Hydrologic Alteration(IHA)/Range of Variability Approach(RVA)
维普
万方数据