基于AQUATOX模型的入湖河道富营养化模拟研究  

AQUATOX Model for Study of Eutrophication of Tributaries

作　　者：魏星瑶 王超[1,2] 王沛芳[1,2] 

机构地区：[1]河海大学环境学院,江苏南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098

出　　处：《水电能源科学》2016年第3期44-48,共5页Water Resources and Power

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07101-008);江苏省杰出青年基金项目(BK2012037)

摘　　要：针对目前入湖河流污染负荷高、富营养化严重等问题,以殷村港为例,基于2014年殷村港每月实测数据,借助AQUATOX水生态模型软件进行建模,并在模型率定、验证后对其水环境进行敏感性分析及控制、非控制模拟,分析了营养盐、温度、流速等因子对殷村港富营养化水平的影响。结果表明,同是控制削减20%浓度下,控磷比控氮更有利于抑制殷村港藻类生长,20%TP的削减可使殷村港叶绿素a浓度削减量达33%,另外在削减磷含量的同时适当增大氮浓度以增大氮磷比可更好抑制藻类生长;水温降低15%,藻类总量有所增加,但蓝藻显著减少,夏季削减量最高达20%以上;流速增大15%时,蓝藻的生物量削减在15%左右,而绿藻、硅藻生物量增多。因此,修建沿河生态护岸、河湖水系连通等可利于改善入湖河道的富营养化状态。In order to deal with the serious pollution and eutrophication of tributaries,AQUATOX simulation was established,calibrated and validated to model the aquatic ecosystem with field measured data and historical records of Yincun Port River.The sensitivity analysis,control and perturbed simulation were conducted to study the different impacts of different variables,such as nutrients,temperature and velocity on model results.On this basis,some conclusions could be made as the following.Compared to TN regulation,TP regulation has a more significant impact on Chl.a concentration and the ratio of N to P also plays an obvious role.The Chl.a concentration would reduce by 33%at 80% TP concentration.When the temperature was reduced by 15%,the total amount of algae would increase with more greens and diatoms while the amount of blue-greens would decrease by more than 20%in summer.When the velocity was increased by15%,the amount of diatoms and greens would increase obviously while that of blue-greens would reduce by about 15%.Thus,the ecological revetment and the connection of rivers and lakes would improve the eutrophication status of rivers.

关 键 词：AQUATOX模型 殷村港 水质变化 富营养化 藻类生长 

分 类 号：X524[环境科学与工程—环境工程]