摘要
为分析广花盆地地下水水质变化趋势,基于广花盆地80个地下水监测井2010~2015年的监测数据,运用单项组分法和综合要素法评价了广花盆地的地下水现状,并分析了主要超标指标的时空分布特征。在此基础上,分别采用Spearman秩相关系数法和主成分分析法评价了广花盆地主要超标指标和地下水综合质量近六年的变化趋势。结果表明,广花盆地地下水的主要超标指标为氨氮、亚硝酸盐、锰、高锰酸盐指数和铁,各超标指标的浓度均呈下降趋势,但趋势不显著;受降雨影响,丰水期水质总体较枯水期好;受工业污染和人类生活污水影响,靠白云区一侧地下水水质总体较花都区差;受广州市农业污染、工业污染和人类生活污水逐年减少的影响,广花盆地地下水综合质量越变越好。研究成果可为广花盆地地下水资源的合理开发利用提供参考。
In order to analyze the change trend of groundwater quality in Guanghua Basin,based on the monitoring data of groundwater monitor well from 2010 to 2015,this paper evaluated the current situation of groundwater in which by the single component method and the comprehensive factor method,and analyzed the spatial and temporal distribution characteristics of the main indexes.And then the Spearman rank correlation coefficient method and principal component analysis were used to evaluate the variation trend of the main indexes and the comprehensive quality of the groundwater in Guanghua Basin in recent six years.The results show that the main indexes of the groundwater in Guanghua Basin exceed the standard are ammonia nitrogen,nitrite,manganese,potassium permanganate and iron,the concentrations of all the above indexes appeared a downward trend which was not significant;Affected by the rainfall,the water quality in the wet period is better than that in the dry season;Affected by industrial pollution and human domestic sewage,the water quality of Baiyun District is worse than that of Huadu District;Affected by the reduction of the agricultural pollution,industrial pollution and domestic sewage in Guangzhou City,the comprehensive quality of the groundwater is becoming better and better.The study provides reference for reasonable development and utilization of groundwater resources in Guanghua Basin.
出处
《水电能源科学》
北大核心
2017年第11期40-43,35,共5页
Water Resources and Power
基金
广东省水利科技创新项目(2012-17)
广州市水务科技项目(GZSW1451S/YD15G0320
2016-203
swjgky-2017001)
关键词
广花盆地
地下水
水质评价
变化趋势
Guanghua Basin
groundwater
water quality assessment
trend analysis
