| 摘要: |
| 【目的】分析乌梁素海存在的生态环境问题，确定恢复乌梁素海生态环境的生态补水量。【方法】在分析乌梁素海生态环境存在问题的基础上，应用功能法，依据湖泊蒸发量、渗漏量以及污染物控制需水量，推求了乌梁素海最小生态需水量，根据湖泊水量平衡原理，对乌梁素海的生态补水量进行了计算。【结果】在确定的乌梁素海排水量及排放污染物情况下，使COD达到Ⅳ类和Ⅴ类水标准的最小生态需水量分别为36.31和17.41亿m3，相应的生态补水量分别为30.87和11.97亿m3；使氨氮达到Ⅳ类和Ⅴ类水标准的最小生态需水量分别为28.1和13.31亿m3，生态补水量分别为22.66和7.87亿m3。【结论】恢复乌梁素海生态环境需要大量的水资源，需根据湖泊容积和修复计划分年度补水。 |
| 关键词: 乌梁素海 生态补水量 功能法 |
| DOI： |
| 分类号: |
| 基金项目:国家重点基础发展研究计划项目(2011CB403306);水利部公益性行业科研专项(201101043,201001012,201101049);教育部科学技术研究重点项目(209125) |
|
| Study on ecological filling water volume of Wuliangsuhai lake |
|
|
| Abstract: |
| 【Objective】The research is conducted to analyze the ecological problems of Wuliangsuhai,and calculate the ecological water supplement volume for Wuliangsuhai ecological restoration.【Method】Based on analyzing the ecological environment problems of Wuliangsuhai,ecological water demand is calculated by applying function method,which mainly include lake evaporation,seepage quantity and water demand for contamination control.According to the lake water balance principle,ecological water supplement for Wuliangsuhai is calculated.【Result】In the event of given water discharge and pollution,in order to improvce the COD to Ⅳ and Ⅴclass,ecological water demand is respectively 36.31×108 m3 and 17.41×108 m3,and ecological water supplement is respectively 30.87×108 m3 and 11.97×108 m3.In order to improving the NH3N to Ⅳ and Ⅴ class,ecological water demand is respectively 28.1×108 m3 and 13.31×108 m3,and ecological water supplement is respectively 22.66×108 m3 and 7.87×108 m3.【Conclusion】A large amount of water resources are needed to restore Wuliangsuhai eco-enviroment,and water should be supplied according to lake volume and restoration plan annually. |
| Key words: Wuliangsuhai lake ecological water supplement volume function method |
