大气干湿沉降对城市景观水体水质影响的评价  

Effect of Atmospheric Dry/Wet Deposition on Urban Landscape Water Quality

作　　者：徐竟成[1,2] 王宇[1] 傅婷[1] 李光明[1,2] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]长江水环境教育部重点实验室,上海200092

出　　处：《四川环境》2011年第3期49-54,共6页Sichuan Environment

摘　　要：选择上海城市化地区的绿地、水体、道路、工地及空中5个类型的环境区域,定期收集大气干湿沉降。测定其大气沉降通量及CODCr、TN、TP的沉降量,并计算分析了其对城市景观水体水质的影响。研究结果表明:在仅受大气干湿沉降影响的条件下,水质处于地表水V类中值、水深为0.5m、1.0m、1.5m和2.0m的城市景观水体,经过28d、54d、83d和214d即可转变为劣V类水体。通过实例分析,提出了应对大气干湿沉降影响的水质保持措施。研究成果为城市景观水体的水质保育提供了评价依据与借鉴。Atmospheric dry/wet deposition information was collected regularly at sites including greenbelts,waters,roads,worksites and atmosphere in urban area of Shanghai city.The atmospheric deposition flux,depositions of CODCr,TN and TP were measured and their impacts on urban landscape water were calculated and analyzed.The result showed that with only influence of atmospheric dry/wet deposition,for the water of urban landscape with surface water quality values in class V,in depth of 0.5,1.0,1.5 and 2.0 meters,the quality may turn into poor level of class V in 28,54,83 and 214 days respective.Based on analysis of case study measures were proposed to deal with the influence of atmospheric dry/wet deposition for keeping good quality of water.These conclusions provide references for the maintainance of urban landscape water.

关 键 词：大气降尘 污染物沉降 城市景观水体 水质 

分 类 号：X824[环境科学与工程—环境工程]