摘要
红枫湖水库是云贵高原峡谷型人工深水水库,为了解该水库水质状况及其富营养化特征,于2010年度对红枫湖水库水质进行逐月监测。结果表明:调查期间红枫湖水库的总氮、总磷、叶绿素a、透明度的平均值分别为1.83mg/L、0.034 mg/L、12.7μg/L和2.3m,氮/磷的质量比为55.4,综合营养状态指数为42,指示该水库水体为中营养,浮游植物的生长为磷限制;红枫湖水库理化环境因子具有明显的时空异质性,在时间上,夏季丰水期初期(6月)营养盐浓度显著的高于其他月份,降雨淋洗作用增加了水库营养盐负荷;在空间上,南湖三岔河总磷浓度高于北湖腰洞,总氮分布与总磷相反,这与南湖、北湖上游不同的点源污染有关。
Hongfeng reservior is an artificial, deep and ravine reservoir which is located on Guizhou plateau. In order to understand conditions of water quality and eutrophication characteristics in Hongfeng reservoir, the water quality was tested monthly in 2010. The results indicated that the mean concentrations of TN, TP, chlorophyll-a and SD in Hongfeng reservoir during the investigation were 1.83mg/L,0. 034mg/L,12.7μg/L and 2.3m, respectively. Mass ratio of TN/TP was around 55.4 and TLI （∑） was 42. The water in reservoirs was in meso-eutrophic states. The growth of phytoplankton was limited by phosphorus. The physical-chemical and environmental factors had an obvious heter- ogeneity in time and space in Hongfeng reservoir ： In time, in the early period of rain, nutrients concen- tration was higher （ June ） than other months distinctly. The scouring action of rainfall increased the nutrients concentration. In space, the total phosphorus concentration in Sanehahe of south Hongfeng reservoir was higher than Yaodong of north Hongfeng reservoir. Total nitrogen concentration distributed oppositely with the total phosphorus concentration, which was related to the different pollution of point source from upstream of north Hongfeng Lake and south Hongfeng Lake.
出处
《贵州师范大学学报（自然科学版）》
CAS
2011年第3期29-35,共7页
Journal of Guizhou Normal University：Natural Sciences
基金
贵州省教育厅重点项目(20090040)
贵州省科技基金项目(20082239)
贵阳市"两湖一库"科技计划项目[2008(45号)]
贵州省社发攻关项目(SY20103176)
