【摘要】 对饮用水源盘溪大龙潭近两年常规监测资料及2019年2月开展的专项监测资料做了分析研究,结合现场调研,分析了大龙潭水质变化及基本原因。结果表明:大龙潭水库水质综合评价基本满足《GB/T14848-2017地下水质量标准》饮用水水质标准要求;总氮和总磷变化幅度均较大,参照《GB3838-2002地表水环境质量标准》,总磷均优于Ⅱ类,总氮多为Ⅳ类以下;引起大龙潭水质变动的主要原因为地下水补给区面源污染,区域降水补给多寡和周边生态环境影响。更多还原

【Abstract】 Based on the data of the first-hand routine monitoring in the past two years and the special monitoring in February 2019, combined with the investigation of field, the characteristics of water quality change, its basic causes were analyzed in Dalongtan, Panxi of Yunnan province. The results showed that the comprehensive evaluation of water quality in Dalongtan basically met the requirements of the quality standard for ground water(GB/T14848-2017). The variation ranges of total nitrogen and total phosphorus were relatively large. Compared it with the data of environmental quality standards for surface water(GB3838-2002), total phosphorus was superior to classⅡ, total nitrogen was lower than the classⅣ. The reasons for the change of water quality in Dalongtan mainly included the non-point source pollution in groundwater recharge area, the amount of regional precipitation recharge and the influence of surrounding ecological environment.更多还原