大型水库功能演变对水库水质的影响——以河南省某大型水库为例

Effects of function changes of large reservoirs on water quality:A case study in Henan Province

水库水质污染是水库利用过程中比较普遍发生的现象,与水库功能演变直接相关。河南省某大型水库目前集防洪、灌溉、城市供水、旅游、养殖、发电、航运等多种功能于一体,在区域社会发展中作用重大。以该水库为例,运用相关分析法,探讨了该水库自1997年以来的水质波动状况与其功能演变之间的关系,发现旅游经济、养殖业经济发展与水库总氮、总磷、石油类等水质指标之间存在比较显著的正相关关系,表明该水库发展旅游、养殖功能存在环境容量限制性,对大型水库功能调整必须注意其生态环境承载能力。

Water pollution is common in the utilization of water resources of reservoim, usually oceuring with a change in reservoir functions. A large reservoir in Henan Provinee provides for flood control, irrigation, water supply, tourism, fishing, power generation, and navigation. It plays an important role in the social development of the region. Using this reservoir as an example and using the correlation analysis method, we discuss the relationships between its water quality and its functions from 1997 onwards. The results show that the tourism income and fishery output are positively related to total nitrogen, total phosphorus, and oil concentration. This indicates that there must be environmental limitations on development of tourism and fisheries. Adjustment of the function of this large reservoir should take into consideration its ecological environmental carrying capacity.