【摘要】 对建成运行多年的宜昌运河公园中的多塘进行了监测,分析了它的水量水质的调控效果并结合现场观察和访谈总结了公园管理运行中的经验。主要结论有:1)多塘通过蓄滞和释放达到削减洪峰和延迟洪峰的效果,串联形式的多塘形成了多级的调蓄作用。2)多塘对高浓度污染物有较好的削减作用,污染物浓度较低时削减作用不明显;从沿程去除效果来看,多塘前半部分污染物去除率高,后半部分去除率低或为负;在停止运行状态下,蓄积在塘中的水体24 h后污染物含量会增加。3)公园经过长时间的运行和使用,最初的设计目标出现了简化、丢失和改变的情况,但这也使景观变得丰富和多样。更多还原

【Abstract】 Urban green space plays an increasingly important role in urban runoff management and ecological restoration. This paper monitored the multi-pond in the Yichang Canal Park that have been built for many years, and analyzed the performance of its water quality and water quantity control. It also combined field observation and interview to summarize the experience of park management operation. The main conclusions are as follows:1) The multi-pond achieved the effect of reducing and delaying flood peak through storage and release, while the multi-pond formed a multi-level regulating effect. 2) The multi-pond had a good performance on high-concentration pollutants in water bodies. When the concentration of pollutants was low, the removal effect wasn′t obvious. From the removal effect along the path, the removal efficiency of pollutants in the first half of the pond was high, but the removal efficiency in the second half was low or negative. In the stopped state, the amount of pollutants will increase after 24 hours of water accumulation in the pond. 3) The landscape had been enriched by the participation of many people and the continuous operation in many years, even though some design goals were simplified, lost, or changed.更多还原