摘要
文章采用巫山县环境监测站2002年到2008年监测资料,对三峡工程蓄水后库区巫山段水质进行了评价与分析。结果表明:蓄水后三峡库区长江干流巫山段总体水质良好;未受到重金属、石油类和挥发性酚类物质污染;总氮和总磷指标偏高;水体处于中营养状态水平。蓄水后一级支流总磷、总氮指标升高,水质类别上升,水质有恶化的趋势;水流变缓,气候条件和营养盐浓度适宜,在一级支流回水敏感区的部分河段爆发了"水华",富营养化的潜在风险升高。在营养水平和气候条件相当的情况下,支流回水区常爆发"水华"而干流未出现"水华"现象,说明水动力条件是发生水体富营养化的主要诱发因子。
In this paper, an analysis was conducted for the water quality condition in the Wushan section in the Three Gorges Reservoir Region using monitoring data from 2002 -2008. Results indicate that water quality in the mainstream is satisfactory in general, and is not polluted by heavy metals, petroleum pollutants and Volatile phenols. TN and TP have a higher concentration. Water quality condition in tributaries becomes deterioration during impoundment. Algae blooms appear in some areas under available hydrodynamic, climate and nutrient conditions.
出处
《环境科学与管理》
CAS
2010年第5期122-125,128,共5页
Environmental Science and Management
关键词
三峡库区
水质评价
富营养化
巫山段
three gorges reservoir region
water quality assessment
eutrophication
Wushan section