长江流域资源与环境 >> 2012, Vol. 21 >> Issue (03): 341-.

• 区域可持续发展 • 上一篇    下一篇

太湖流域上游河流污染空间分布特征研究

王雪|余辉|燕姝雯|陈雷   

  1. (1.吉林建筑工程学院|吉林 长春 130118;2.中国环境科学研究院湖泊生态环境创新基地|北京 100012; 3.复旦大学环境科学与工程系|上海 200433 
  • 出版日期:2012-03-20

SPATIAL DISTRIBUTION CHARACTERISTICS OF UPSTREAM RIVER POLLUTION IN LAKE TAIHU BASIN

WANG Xue1,2, YU Hui2, YAN Shuwen3,2, CHEN Lei1   

  1. (1.Jilin Institute of Architecture and Civil Engineering,Changchun 130118,China; 2.Research Center of Lake Environment,Chinese Research Academy of Environmental Science,Beijing 100012,China|3.Department of Environmental Science and Engineering,Fudan University|Shanghai 200433,China
  • Online:2012-03-20

摘要:

为把握太湖流域上游西北部河网区域水体的N、P污染特征及其空间分布,2010年8月在该区域内的武进港直湖港水系、洮滆水系、丹扁孟河(丹金溧漕运河、扁担河及孟津河)以及宜溧河水系的河网,监测了39个河流断面的水质。研究表明,4水系TN平均浓度分别为388、283、291及193 mg/L,DTN占TN比重分别为9180%、7843%、7001%及8444%,河网氮输出均以DTN为主。在DTN中NO-3N浓度所占比重分别为6747%、5275%、7748%及4281%,NH+4N浓度所占比重分别为1633%、3316%、1127%及4351%。TP平均浓度分别为059、030、026及015 mg/L,DTP所占比重分别为6213%、4019%、4673%及3197%,而PO3-4P浓度占DTP比重分别为2073%、5461%、4327%及7772%。武进港直湖港水系N平均浓度显著(〖WTBX〗p〖WTBZ〗<001)高于宜溧河水系,与其它两水系无显著差异,P平均浓度显著(〖WTBX〗p〖WTBZ〗<005)高于宜溧河水系和丹扁孟河,与洮滆水系无显著差异。影响太湖流域上游西北部区域河流水网水质的主导因素为氮污染,而其中以DTN污染最为严重。太湖西北部是蓝藻水华暴发的重灾区,上游区域DTN的大量输入,将成为引发太湖水体生态系统灾变的潜在风险

Abstract:

In order to investigate spatial distribution characteristics of nitrogen and phosphorus in upstream rivers in Lake Taihu Basin beside the northwest part of the lake,water qualities of 39 rivers were monitored in the water systems of WujinZhihu Port,Taoge,River Danbianmeng (Danjinlicao,Biandan and Mengjin) and Yilihe in August of 2010.Our study showed that the average concentrations of TN in the four water systems were 388 mg/L,283 mg/L,291 mg/L and 193 mg/L respectively.The proportions of DTN in TN were 9180%,7843%,7001% and 8444% respectively,so that DTN was the major nitrogen pollution components in the water systems.The proportions of NO-3N in DTN were 6747%,5275%,7748% and 4281% respectively,and the proportions of NH+4N in DTN were 1633%,3316%,1127% and 4351% respectively.The average concentrations of TP were 059 mg/L,030 mg/L,026 mg/L and 015 mg/L respectively,and the proportions of DTP in TP were 6213%,4019%,4673% and 3197% respectively.The proportions of PO3-4P in DTP were 2073%,5461%,4327% and 7772% respectively.The N and P pollution in the water system of WujinZhihu Harbor is the most serious in the four water systems.The dominant pollution factor that influences the water quality of upstream rivers in Lake Taihu Basin beside the northwest part of the lake was nitrogen,in which dissolved DTN was the major component. Since the northwest part of the lake is a disastrous area with heavy cyanobacterial bloom,large amount of DTN input to this part will be a potential risk for the ecosystem in the lake

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