北京奥运龙形水系水质特征分析与评价  

Analysis and evaluation of water quality characteristics in Olympic Dragon-shaped Water System in Beijing

作　　者：刘青[1] 何芳[1,2] 张清靖[2] 杨慕[2] 李扬[1,2] 曲疆奇 

机构地区：[1]大连海洋大学辽宁省水生生物学重点实验室,辽宁大连116023 [2]北京市水产科学研究所,北京100068

出　　处：《大连海洋大学学报》2013年第6期597-603,共7页Journal of Dalian Ocean University

基　　金：国家重大水专项基金资助项目(2009ZX07314-009-05);国家"十二五"科技支撑计划项目(2012BAD25B03);北京市科技计划项目(Z121100001512008)

摘　　要：根据2012年对北京市奥林匹克公园龙形水系水质逐月监测结果,采用综合营养状态指数法(TLI)和水质综合标识指数法(WQI)分别对该水系水体富营养化现状和水质级别进行评价。结果表明:龙形水系水质偏碱性,水中溶解氧常年处于过饱和状态,化学耗氧量(COD Mn)、生化需氧量(BOD5)、悬浮物、叶绿素a、总氮和总磷等水质指标随时间变化较大,水体中总磷一直维持在较低水平,是龙形水系水体富营养化的限制因子;水系水体营养状态从春季到秋季由轻富营养到中营养转变,其水质级别基本上都在Ⅲ类水质标准以上,达到了水环境功能目标要求;沉水植物种植水域水质优于非沉水植物种植水域;水系河道设计也能影响水系的水质。本研究结果可为北京市奥林匹克公园龙形水系水环境保护提供科学依据。The water quality was monthly monitored in the dragon-shaped water system in Beijing Olympic Park in 2012,and the water eutrophication and state were evaluated by trophic level index( TLI) method and water quality index( WQI) method. Some water quality indices including chemical oxygen demand( COD) Mn,biological oxygen demand( BOD 5),suspended solid( SS),Chl-a,total nitrogen( TN) and total phosphorus( TP) were found to be fluctuated sharply with time in the slightly alkaline,and supersaturated dissolved oxygen water in the dragonshaped water system. The relatively low level of TP in the water was the limiting factor of eutrophication in the dragon-shaped water system. The eutrophication was found to be changed from light eutrophication in spring to mesotrophication in summer and autumn,class Ⅲ water quality standard in most of the time to meet the water environment function target requirements. There was better water quality in submerged plant area than that in non- submerged plant area. The water quality was also affected by the drainage channel design. The findings provide a theoretical basis for water environmental protection of Beijing Olympic dragon-shaped water system.

关 键 词：龙形水系 水质特征 富营养化 评价 

分 类 号：X824[环境科学与工程—环境工程]