| 岷江中游眉山~乐山段水质变化趋势及航电开发对其影响研究 |
| Change Trend of Water Quality between Meishan and Leshan in Middle Minjiang River and Impact of Navigation-Power Development |
| 投稿时间：2017-08-27 修订日期：2018-01-15 |
| DOI：10.15928/j.1674-3075.2018.04.003 |
| 中文关键词:岷江中游 航电开发 水质 变化趋势 时空分布 |
| 英文关键词:middle Minjiang River navigation-power development water quality change trend spatial and temporal distribution |
| 基金项目:国家重点研发计划项目：水利工程环境安全保障及泄洪消能技术(课题十：泄水过饱和气体形成机制与消减技术研究)(项目编号：2016YFC0401710) |
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| 中文摘要: |
| 依据岷江中游眉山~乐山河段(简称眉乐段)水质监测资料,选用具有代表性的水质因子COD、NH3-N、TP分析眉乐段水质变化趋势,探讨航电梯级开发对水质的影响.结果表明,眉乐段水质主要受上游来水影响,府河汇合后的岷江干流眉乐段区间污染负荷量相对较少,对河流水质影响相对较小;河段水质在空间分布上总体呈现上游至下游逐步好转的趋势,COD沿程稳定达到Ⅲ类水质标准,NH3-N和TP沿程降低;在时间分布上,水质逐年变好;主要支流体泉河水质较差,超标严重,思蒙河和毛河COD、NH3-N浓度维持在Ⅲ类水质标准,TP浓度超过Ⅳ类水质标准,且有逐年升高趋势;汉阳库区建成后COD、NH3-N较建成前降低,TP较建成前略微增加,汉阳库区出库COD、NH3-N、TP较入库降低.研究结果可为航电梯级水库环境影响分析?航电开发和水环境治理提供参考依据 |
| 英文摘要: |
| The change trend of water quality and the impact of navigation-power development between Meishan and Leshan section were discussed based on water monitoring data. The results showed that the water quality between Meishan and Leshan section was mainly influenced by the pollution load of upper reaches, and pollution load between Meishan and Leshan section was relatively small and had little impact on water quality. COD met Ⅲ water quality standards and kept stable, while NH3-N and TP decreased from upstream to downstream. On the time distribution, water quality became better year by year. Among the main tributaries, water quality of Tiquan River was relatively poorer and exceeded the standard seriously. The concentration of COD and NH3-N of Simeng River and Mao River were within Ⅲ water quality standard, while the concentration of TP exceeded Ⅳ water quality standard and increased year by year. The concentration of COD and NH3-N in Hanyang reservoir was lower relative to that before its construction, while TP increased slightly after the construction of Hanyang reservoir. The COD, NH3-N and TP of outflow were lower than that of inflow on Hanyang reservoir. The results can provide a reference for the environmental impact analysis of cascade reservoir, navigation-power development and water environment control |
| 王凯利,梁瑞峰.2018.岷江中游眉山~乐山段水质变化趋势及航电开发对其影响研究[J].水生态学杂志,39(4):17-23. |
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