摘要
红枫湖是贵阳市重要的生活饮用水源地,20世纪90年代末期水体污染严重。从2008年开始进行综合治理,2011年起进入治理成效阶段。为了对治理成效期的水质状况有全面了解,为进一步污染治理和生态调控提供科学依据和对策,利用富营养化指数法和主成分分析方法对2011—2013年水体富营养化状态特征进行研究分析。结果表明:(1)在监测期,红枫湖始终保持中营养状态不变,但呈现逐年减弱的趋势,水质达标率逐年升高。(2)全湖的综合营养状态指数存在明显的时空异质性。(3)影响红枫湖水体质量的主控因子为叶绿素a、pH、透明度、总磷和高锰酸盐指数,总氮对其影响不显著。(4)在下一步治理中,继续加强外源性治理的同时,须加强水体内源性污染的治理工作,促进水质进一步好转。
Hongfeng Lake is an important source of drinking water in Guiyang.In the late 1990 s,the lake was seriously polluted.The comprehensive treatment on the lake was carried out at the beginning of 2008,and then the lake entered into the stage of governance effect in 2011.In order to understand the water quality status of Hongfeng Lake during governance effectiveness period and provide scientific basises and measures for further pollution control and ecological regulation,the characteristics of eutrophication status in water column between 2011 and 2013 were studied by using eutrophication index method and the principal component analysis method.It was showed that,（1）during the monitoring period,the lake was mesotrophic,but the water quality became better and the qualification rate of water quality increased year by year.（2）The eutrophication index of lake showed an obvious heterogeneity in time and space.（3）The main controlling factors affecting the water quality of Hongfeng Lake were chlorophyll a,pH,transparency,total phosphorus and permanganate index.The influence of total nitrogen on the water quality was not significant.（4）In the next step of governance,both the exogenous governance and the endogenous pollution treatments needed be strengthened for further improving water quality.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2015年第6期55-62,68,共9页
Environmental Pollution & Control
基金
贵州省科技厅项目(黔科合J字[2011]2085)
贵阳市2012创新人才计划项目(筑科合同[2012HK]209-57号)
贵阳市社会发展攻关项目(2011筑科农合同字第59号)
关键词
富营养状态
时空分布
主控因子
红枫湖
eutrophication status
spatial and temporal distribution
main controlling factors
Hongfeng Lake
