【摘要】：為分析廣花盆地地下水水質(zhì)變化趨勢,基于廣花盆地80個地下水監(jiān)測井2010~2015年的監(jiān)測數(shù)據(jù),運(yùn)用單項組分法和綜合要素法評價了廣花盆地的地下水現(xiàn)狀,并分析了主要超標(biāo)指標(biāo)的時空分布特征。在此基礎(chǔ)上,分別采用Spearman秩相關(guān)系數(shù)法和主成分分析法評價了廣花盆地主要超標(biāo)指標(biāo)和地下水綜合質(zhì)量近六年的變化趨勢。結(jié)果表明,廣花盆地地下水的主要超標(biāo)指標(biāo)為氨氮、亞硝酸鹽、錳、高錳酸鹽指數(shù)和鐵,各超標(biāo)指標(biāo)的濃度均呈下降趨勢,但趨勢不顯著;受降雨影響,豐水期水質(zhì)總體較枯水期好;受工業(yè)污染和人類生活污水影響,靠白云區(qū)一側(cè)地下水水質(zhì)總體較花都區(qū)差;受廣州市農(nóng)業(yè)污染、工業(yè)污染和人類生活污水逐年減少的影響,廣花盆地地下水綜合質(zhì)量越變越好。研究成果可為廣花盆地地下水資源的合理開發(fā)利用提供參考。
[Abstract]:In order to analyze the variation trend of groundwater quality in Guanghua Basin, based on the monitoring data of 80 groundwater monitoring wells in Guanghua Basin from 2010 to 2015, the present situation of groundwater in Guanghua Basin was evaluated by single component method and comprehensive element method. The temporal and spatial distribution characteristics of the main indicators are analyzed. On the basis of this, Spearman rank correlation coefficient method and principal component analysis method are used to evaluate the variation trend of the main over-standard indexes and the comprehensive quality of groundwater in Guanghua Basin in the past six years. The results show that the main indexes of exceeding the standard of groundwater in Guanghua Basin are ammonia nitrogen, nitrite, manganese, permanganate index and iron. Under the influence of rainfall, the water quality in high water period is better than that in dry season, and the groundwater quality in Baiyun area is worse than that in Huadu area under the influence of industrial pollution and human domestic sewage. Under the influence of agricultural pollution, industrial pollution and the decrease of human domestic sewage, the comprehensive quality of groundwater in Guanghua Basin is getting better and better. The research results can provide a reference for the rational development and utilization of groundwater resources in Guanghua Basin.
【作者單位】： 廣州市水務(wù)科學(xué)研究所;中山大學(xué)地理科學(xué)與規(guī)劃學(xué)院;
【基金】：廣東省水利科技創(chuàng)新項目(2012-17) 廣州市水務(wù)科技項目(GZSW1451S/YD15G0320,2016-203,swjgky-2017001)
【分類號】：X523;X824
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本文編號：2376745