凤阳县韭山洞景区水库水质理化因子研究

Study on the Physicochemical Factor of the Reservoir of Jiushan Cave Scenic Area in Fengyang County

目的:研究凤阳县韭山洞旅游开发对韭山洞水库水质的影响。方法:于2017年11月至2018年9月期间,对凤阳县韭山洞景区水库进行实地调查取样,在地理位置分隔均匀的4个采样点分取其表面和中层的水,检测水温、pH值、电导率值、溶氧量(DO)、亚硝酸盐含量、化学需氧量(CODCr)等水质理化因子。结果:韭山洞景区水库水温为7.9～28.6℃,pH值范围为7.12～8.64,电导率值在268～601μs/cm之间,DO范围为7.11～8.52mg/L、亚硝酸盐含量为0.028～0.152mg/L、CODCr范围为28.49～39.17mg/L。结论:pH、DO、电导率值、亚硝酸盐含量等理化因子达到了我国地表水Ⅲ类水质标准,但CODCr指标高于地表水Ⅲ类水质标准。结果表明,由于旅游业开发、居民日常生活和生产使得韭山洞景区水库水质受到了一定程度的污染,逐渐富营养化。

Ocbjective:To investigate the physicochemical factor of the reservoir of Jiushan cave scenic area in Fengyang County.Methods:The four water sampling points of the Jiushan cave reservoir was taken a field survey with the samples of the surface and the middle water from November 2017 to September 2018.The six major water quality analysis of physical and chemical factors were measured and analyzed based on water temperature,pH,conductivity,dissolved oxygen(DO),nitrite and chemical oxygen demand(COD Cr).Results:The range of water temperature,pH,conductivity,DO,nitrite and COD Cr were 7.9-28.6℃,7.12-8.64,268-601μs/cm,7.11-8.52 mg/L,0.028-0.152 mg/L,28.49-39.17 mg/L,respectively.Conclusion:The physical and chemical factors of pH,conductivity,DO and nitrite reached the surface water class III water quality standard from the Jiushan cave reservoir area,but COD Cr was higher than Class III water quality standard of the“environmental quality standard for surface water”.The water quality monitoring of reservoir of Jiushan cave scenic area shows that the tourism industry development,residents of daily life and agricultural and production have polluted water quality of the reservoir of Jiushan cave scenic area.