城市湿地水质昼夜变化研究  

Study on Diurnal Variation of Wetland Water Quality in City

作　　者：纪晓亮[1] 李鹏程[1] 商栩[1] Randy Dahlgren 张明华[1] 

机构地区：[1]温州医学院 温州市水域科学与环境生态重点实验室,浙江温州325035 [2]加州大学戴维斯分校陆地大气及水资源系,美国加州95616

出　　处：《环境保护科学》2013年第5期18-21,50,共5页Environmental Protection Science

基　　金：浙江省科技厅重大专项(2008C03009);温州市重大专项(20082780125);温州市科技局对外科技合作交流项目(H20100006)

摘　　要：2012年6月13～14日对温州三垟湿地水质进行连续24h的采样监测,并运用对数型幂函数普适指数公式评价了监测站点1天内连续的水质变化情况。研究目的是揭示城市湿地水体中水质参数是否存在昼夜变化、昼夜变化的幅度大小和变化原因。结果表明:温度、pH、溶解氧、化学需氧量和叶绿素a表现出明显的昼夜变化,由于影响营养盐的因素复杂,营养盐指标没有表现出明显的昼夜变化。运用对数型幂函数普适指数公式评价监测站点的水质情况,评价结果显示在连续24h的实验中,水体的富营养化程度都处于"极富"营养状态而且呈现出白天营养状态综合指数下降,夜间升高的趋势。Based on the monitoring of water quality of Sanyang wetland for 24 hours in 13-14/06/2012,we assessed the diurnal variation of water quality by using logarithmic power function to study whether water quality had diurnal variation,and its range and reasons.The results showed that the diurnal variation of T,pH,DO,COD and Chl-a were significant,while the diurnal variation of nutrients were not significant due to the complex factors which had effects on the nutrients.During continuous monitoring,the water eutrophication degrees were all at the highest level.The water eutrophication degrees decreased in the daytime and increased at night.

关 键 词：湿地 水质 昼夜变化 

分 类 号：X832[环境科学与工程—环境工程]