近年来徐六泾断面水质变化及污染物入海通量分析  

Analysis of Water Quality Change and the Pollutant Fluxes into the Sea at Xuliujing Section in Recent Years

作　　者：程肖雪 徐昕 殷豪 CHENG Xiao-xue;XU Xin;YIN Hao(Yangtze River Estuary Survey Bureau of Hydrology and Water Resource,CWRC,Ministry of Water Resources,Shanghai 200136)

机构地区：[1]长江水利委员会水文局长江口水文水资源勘测局,上海200136

出　　处：《长江工程职业技术学院学报》2018年第4期5-7,15,共4页Journal of Changjiang Institute of Technology

摘　　要：将2006～2017年长江口徐六泾断面水质监测每年15次的监测成果与径流量作趋势分析,判断影响长江入海口水质的主要水质要素和水质等级的变化趋势,并分析污染物入海通量及其年际变化趋势。结果表明,11年间,参与评价的水质要素均达到地表水Ⅲ类水质以上的标准;污染物入海通量主要和上游来水量有关,径流量越大,对应的污染物入海通量也大,径流量越小,对应的污染物入海通量也相应变小;其中,溶解氧的年入海通量在年入海总量中占绝大部分比例,其年平均浓度就成为了决定年入海总量的关键因素。A trend analysis of monitoring result and runoff volume of Xu liu Jing cross section in Yangtze Estuary of 15 times per year(2006-2017)is made,to judge the main water quality parameters and grades,and analyze the pollution flux and the annual variation tendency.The results show that the water quality parameter evaluated all beyond the standard of the surface water gradeⅢ;contaminations fluxes is mainly concerned about the inflow in upstream:the runoff volume becomes larger along with the corresponding contaminants fluxes,the runoff volume becomes less along with the decrease of the corresponding contaminants fluxes.Among this,the dissolved Oxygen annual pollution flux holds absolutely large proportion in the total mass,and the annual mean concentration is becoming the key factor determining the total mass of contaminations fluxes.

关 键 词：徐六泾 水质 径流量 污染物通量 

分 类 号：X824[环境科学与工程—环境工程]