| 引用本文: | 朱伟,谈永琴,王若辰,冯甘雨,陈怀民,刘毅璠,李明.太湖典型区2010-2017年间水质变化趋势及异常分析.湖泊科学,2018,30(2):296-305. DOI:10.18307/2018.0202 |
| ZHU Wei,TAN Yongqin,WANG Ruochen,FENG Ganyu,CHEN Huaimin,LIU Yifan,LI Ming.The trend of water quality variation and analysis in typical area of Lake Taihu, 2010-2017. J. Lake Sci.2018,30(2):296-305. DOI:10.18307/2018.0202 |
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| 太湖典型区2010-2017年间水质变化趋势及异常分析 |
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朱伟1,2, 谈永琴1, 王若辰1, 冯甘雨1, 陈怀民1, 刘毅璠1, 李明2,3
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1.河海大学环境学院, 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, 南京 210098;3.西北农林科技大学资源环境学院, 杨凌 712100
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| 摘要: |
| 自2007年太湖蓝藻水华引起无锡供水危机后，在太湖流域及湖区开展了一系列综合治理措施以改善太湖水环境质量.本研究在太湖梅梁湾和贡湖湾各设置3个采样点，自2010年4月起每月2次监测太湖水质.结合水文气象数据及无锡市环境监测站和太湖局的同期数据，明确太湖自2010年以来，水质整体良好，总氮浓度在波动中呈现下降的趋势，总磷浓度在2014年前也是在波动中呈现下降的趋势，但在2015和2016年有所回升，回升比例约为15%~20%.2015和2016年总磷浓度出现回升的主要原因是这2年的2次大洪水过程携带大量N、P进入太湖湖区，洪水消退过程中，N大多以溶解态排泄出湖区，而P则由于大多数以颗粒态存在，逐渐沉积到湖泊中，随着微囊藻生长消耗水体溶解态P以及水体pH和溶解氧的变化逐渐释放到太湖水体中. |
| 关键词: 太湖 梅梁湾 贡湖湾 总氮 总磷 微囊藻 富营养化 |
| DOI：10.18307/2018.0202 |
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| 基金项目:太湖水污染治理专项（TH2016302）资助. |
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| The trend of water quality variation and analysis in typical area of Lake Taihu, 2010-2017 |
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ZHU Wei1,2, TAN Yongqin1, WANG Ruochen1, FENG Ganyu1, CHEN Huaimin1, LIU Yifan1, LI Ming2,3
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1.College of Environment, Hohai University, Nanjing 210098, P. R. China;2.Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, P. R. China;3.College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, P. R. China
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| Abstract: |
| In order to deal with cyanobacterial bloom occurred in Lake Taihu, a series of comprehensive measures have been carried out in Lake Taihu and surrounding catchment since 2007. In the current study, Meiliang Bay and Gonghu Bay was selected as study areas. For each bay, 3 sampling points were set for monitoring water quality twice a month since April 2010. The hydrological and meteorological data and water quality data from Wuxi Municipal Environmental Monitoring Station and Ministry of Water Resources Bureau of Taihu Basin were also collected. All the data showed that water quality in Lake Taihu was improving since 2010. The concentration of total nitrogen (TN) was decreasing year by year. Total phosphorus (TP) concentration has also been decreasing before 2014, but it started to increase in 2015 and 2016 ranging from 15 to 20 percentage. The increase of TP within 2015 and 2016 was due to two great floods occurred in both years, which brought large amount of nutrient into Lake Taihu. After the floods, most nitrogen was discharged away in soluble form while most phosphorous was gradually deposited in Lake Taihu as particulate form. The accumulated phosphorus was then released along with the consumption of dissolved total phosphorus, increasing pH and variation in dissolved oxygen due to Microcystis growth. |
| Key words: Lake Taihu Meiliang Bay Gonghu Bay total nitrogen total phosphorus Microcystis eutrophication |
