摘要
首先对桂林青狮潭水库给漓江补水的情势进行分析,然后进一步研究水库补水对漓江下游河道水环境的影响,分析了典型水文年中自然径流和青狮潭水库补水两种模式下,下游河道关键水环境因子的变化。模拟结果表明,水库补水在平水年的影响大于丰水年和枯水年,局部浅水区的变化大,年平均降幅为0.48%,温度增幅平均为0.9%。
In this paper,an analysis of the situation concerning water replenishment of Lijiang river trom Guilin Qingshitan Reservoir is presented,followed by a further research on the impact of water replenishment from the Reservoir on the water environment of the riverways in the lower reaches of the Lijiang river,the variation of key water environmental factors of the lower reach riverways was analyzed under such two modes as the natural runoff and water replenishment from Qingshitan Reservoir during typical hydrologic years. The simulated result shows that the impact of water replenishment from the Reservoir in normal flow years is more significant than that in both high flow years and low flow years,and the variation in shoal areas is greater than that in deepwater areas locally ;in respect of the water quality,the average drop in the dissolved oxygen concentration is 0. 48% and the average temperature increase is 0. 9% at the river reaches with a lower topography in normal flow years.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2009年第2期153-157,共5页
Journal of Guangxi Normal University:Natural Science Edition
基金
国家自然科学基金资助项目(50879086)
国家公益专项资助项目(200801051)
广西科技厅攻关项目(0632006-3A)
关键词
补水
漓江
水环境
青狮潭水库
water replenishment
Lijiang river
water environment
Qingshitan Reservoir
