摘要
以漓江上游现有的青狮潭大型水库为依据，采用IHA和RVA方法分析了33个水文指标的变化程度．揭示水库调节对漓江生态环境的影响。结果表明：水库调节能够明显增加枯水期12月、1月和2月的月平均流量，增加值为4．5～12．3m^3／s；可使得年最小1d流量与年最大1d流量间隔时间变宽，增加45d，但对年最小连续1d、3d和7d的极端水文条件改善不明显；高流量脉冲历时有所增加，低流量脉冲历时减小．日均流量平均增加率和减少率均减小；漓江水文情势整体改变度为中度。漓江水利工程调节既要满足旅游通航需要．也应重视极端枯水期的调节。
Taking the Qingshitan Reservoir on the Lijiang River as a case, IHA and RVA methods were used to analyze the alteration degrees of 33 IHA parameters. The results showed that the reservoir regulation could significantly increase monthly average flow in low water period, such as December, January and February, and the increase values are from 4.5m^3/s to 12.3m^3/s. The Qingshitan Reservoir regulation makes the during between annual minimum and maximum 1 -day means become longer and increase of 45 days, but the extremely hydrologic conditions of annual minimum 1-day, 3-day, 7-day means have no obvious improvement. In the post-regulation period, duration of high-flow pulses increase, however, duration of low-flow pulses decrease. Rise rates and fall rates decrease. The hydrologic alteration degree of Guilin station after Qingshitan reservoir regulation is moderate. Water structure regulation to the Lijiang River meet the needs of travel navigation, however, we should pay attention to the reservoir regulation in extremely low water period.
出处
《水文》
CSCD
北大核心
2012年第6期47-51,共5页
Journal of China Hydrology
基金
国家科技支撑计划项目课题(2012BAC16B02)
广西建筑新能源与节能重点实验室开放基金(11-031-21-4)
广西高等学校优秀人才资助计划项目(RC2007019)
关键词
水文情势
IHA和RVA方法
青狮潭水库
漓江
hydrologic regime
IHA and RVA methods
Qingshitan Reservoir
Lijiang River
