水土保持通报2016，Vol.36Issue(3)：81-87,93,8.
太湖流域农村黑臭河流表层沉积物营养盐的污染特征
Nutritional Pollution Characteristics of Surface Sediments from a Rural Malodorous Black River in Taihu Lake Area
摘要
Abstract
[Objective] In order to provide fundamental data for a better understanding of the current pollution status and management for the malodorous black rivers ,especially to prevent and control the eutrophication of Taihu lake ,the spatial distribution and morphological characteristics of sediment nutrient in a rural malo ‐dorous black river were analyzed and evaluated .[Methods] Thirteen surface sediment samples along the Northern Branch of Zhangxia Stream in Zhoutie Town of Yixing City ,Jiangsu Province were collected from the upstream to the downstream .The spatial distribution of total nitrogen concentration (TN ) ,total phos‐phorus(TP) ,ammonia nitrogen(NH+4 ‐N) ,nitrate nitrogen(NO-3 ‐N) ,organic nitrogen(Org‐N) and total or‐ganic carbon(TOC) were investigated .The component distribution of carbon(C) ,nitrogen(N) ,phosphorus (P) in surface sediments were studied by coupling analysis for pollution assessment .[Results] Org‐N was the main component of nitrogen in surface sediments with an average concentration of 2 193 .69 mg /kg ,ac‐counted for 90 .86% of TN .Concentrations of TN ,Org‐N ,TP and TOC presented a fluctuant increasing trend from upstream to downstream ,and the highest values were 2 .98 ,3 .46 ,6 .29 and 1 .59 folds of the minimum values ,respectively .The concentration of NH +4 ‐N increased slowly at the initial stage and then de‐creased rapidly ,while the concentration of NO -3 ‐N showed an opposite trend .Mean ratio of C /N for the en‐tire stream was 12 .07 ,and the organic matter were mainly sourced from exogenous input .In addition ,con‐centrations of TOC and TN showed an extremely significant positive correlation (p < 0 .01 ,n= 13) .Mean ra‐tio of C/P was 2 .04 ,and concentrations of TOC and TP showed a significant positive correlation (p < 0 .05 , n= 13) .Mean ratio of N /P was 2 .04 ,and concentrations of TN and TP showed an extremely significant pos‐itive correlation (p < 0 .01 ,n= 13) .As a result ,the pollution of nitrogen and phosphorus was homogenous . [Conclusion] Organic pollution is the main pollution for rural malodorous black river in the Taihu lake water ‐shed ,where the nitrogen pollution is mainly Org‐N pollution .关键词
营养盐/污染特征/表层沉积物/黑臭河流Key words
nutritional/pollution characteristics/surface sediment/malodorous black river分类
资源环境引用本文复制引用
冀峰,王国祥,韩睿明,李时银,董彬,黄亚文..太湖流域农村黑臭河流表层沉积物营养盐的污染特征[J].水土保持通报,2016,36(3):81-87,93,8.基金项目
国家水体污染控制与治理科技重大专项（2012ZX07101-008-02）；江苏省太湖水环境综合治理科研项目（JSZC-G2014-212）；江苏省太湖水环境综合治理科研项目 （）
