富春江(富阳段)表层沉积物中生源物质的分布特征  

Characteristics of Nutrient Matter in the Surface Sediment of Fushun River,Fuyang Section

作　　者：沈小东[1] 马嵩[2] 杨强[1] 邵晓红 林琦[2] 

机构地区：[1]杭州市环境保护科学研究院,杭州310014 [2]浙江大学环境工程系,杭州310029 [3]桐庐县环境监测站,浙江桐庐311500

出　　处：《科技通报》2008年第4期570-576,共7页Bulletin of Science and Technology

基　　金：浙江省科技厅项目资助(2008C23G2010086)

摘　　要：针对富春江(富阳段)水污染现状,对富春江(富阳段)的洋浦、永济浦和大源溪三个主要排污口附近的沉积物进行系统研究。结果表明,受污染沉积物的有机质含量为41.6～294.2g/kg,平均为145.3g/kg;凯氏氮含量为1.2～5.2g/kg,平均为2.6g/kg;总磷含量为817-1415μg/g,平均为1050μg/g。沉积物有机质、总氮、总磷水平对研究区底栖生物群落和生态环境构成了较大威胁。沉积物的有机质和凯氏氮含量受排污口影响明显;但沉积物总磷含量受排污口影响不明显。生源物质之间以及生源物质与沉积物理化性质的相关性分析表明,沉积物碳、氮以及粉砂粒存在同源性,沉积物磷与碳、氮以及粉砂粒不具有同源性,关于该区域磷素污染源还需进一步调研确认。Due to the serious status of water pollution in Fushun River, Fuyang section, this paper investigated the characteristics of surface sediment from the three main discharge sites. Results showed that organic matter （OM）, total nitrogen （KTN） and total phos- phorus （TP） varied from 41.6-294.2 g/kg （average 145.3 g/kg）, 1.2-5.2 g/kg （average 2.6 g/kg）and 817-1415 μg/g, （average 1050 μg/g） respectively. The contents of OM, KTN and TP in the sediment were so high that the negative effect to the zoobenthos and bio- geocenose was expected. Discharge site that received a lot of wastewater was a main factor for the accumulation of OM and KTN in the sediment, but not for TP. The correlation between nutrient matters and physicochemical properties in the sediments suggested that carbon, nitrogen and silt were probably from the same source, phosphorus, however, was not and the main sources of phosphorus in this region should be investigated further.

关 键 词：沉积物 氮 磷 有机质 富春江 

分 类 号：X55[环境科学与工程—环境工程]