潘寶 王曉輝 王秀 周春財 劉桂建



摘要 在南淝河水質監測數據的基礎上,通過聚類分析,對其主要水環境污染物的空間分布特征進行了剖析,然后采用因子分析法提取影響因子,鑒別污染源并采用絕對主成分多元線性回歸分析法計算各影響因子的污染貢獻率。結果表明,南淝河整體污染較為嚴重,通過聚類分析可將南淝河大致分為A、B、C 3類,其中,A類83.32%的污染來源于點源營養物質和點源有機物;B類70.16%來源于點源營養物質和點源有機物;C類71.63%的污染來源于農業面源的農業營養物質和生物化學的影響。
關鍵詞 水環境污染物;聚類分析;因子分析法;絕對主成分多元線性回歸分析法;南淝河
中圖分類號 X522 文獻標識碼 A 文章編號 0517-6611(2017)13-0041-03
Spatial Distribution Characteristics and Pollution Source Analysis of the Main Pollutants in Nanfei River
PAN Bao1,WANG Xiao-hui1,2,WANG Xiu1 et al
(1.School of Resource and Environmental Engineering,Hefei University of Technology,Hefei,Anhui 230009; 2.School of Earth and Space Sciences,University of Science and Technology of China,Hefei,Anhui 230026)
Abstract Based on the survey data of Nanfei River and cluster analysis,the spatial distribution characteristics of the main water pollutants were analyzed,and then,factor analysis method was used to extract factors to identify pollution sources and the absolute principal component analysis method to determine the impact of various factors on the contribution rate index of multivariate linear regression.The results showed that the Nanfei River pollution was very serious,the surface water can be divided into A,B,C three kinds by clustering analysis,among which 83.32% source of pollution of A was from point organic complex and nutrients; while 70.16% source of pollution of B was from point organic complex and nutrients; while 71.63% of C constitute of agricultural nutrients and biological effects of chemistry from the agricultural non-point source.
Key words Water environmental pollutants;CA;FA;APCS-MLR;Nanfei River
南淝河古稱施水,是巢湖水系的支流,被稱為合肥市的“母親河”。隨著合肥市發展進程的加快,大量工業、農業及生活污水不斷排放到南淝河流域,造成南淝河水質惡劣,已經成為名副其實的納污河[1]。同時,由于南淝河流域上游水庫的攔蓄,改變了河流原有的水文過程,南淝河目前已經演化成典型的缺乏生態基流的河流,而污水處理廠尾水的再生水成為干流河道的重要補給水源,尤其在城區段,污水廠尾水已成為主要的補給水源。目前,國內研究主要集中于南淝河污染現狀及其污染評價[2-3],而利用多元統計技術對水環境污染物的空間分布特征、識別重點污染控制區域和污染來源方面,尤其是精度解析南淝河流域污染來源及其貢獻份額方面的研究甚少。……