Abstract:To reveal the features of the water stratification and the response of water quality of Hongfeng reservoir, in Guizhou Province of China, main limnological variables including hydrological and environmental factors were observed 45 times, from August 2008 to October 2009, at five sampling stations. An event of water quality abruptly degeneration was discussed. The the thermal stratification was monomictic, which formed from April to September, but not strongly, which caused chemical stratification and affected water quality. The mean concentrations of chlorophyll-a, TP, TN, NH4+-N and SD were 13.6mg/m3, 0.063mg/L,1.22mg/L,0.347mg/L and 1.9m, respectively, indicating that the reservoir was meso-eutrophic. Dissolved oxygen was between 0.3 to 6.9mg/L during the stratification period, the rational of N/P was between 8 to 104,and mean that the reservoir was limited by phosphorus, but nitrogen, and hypolimnion seasonal anoxia.Seasonal deterioration of water quality was associated with the unsteady structure of water stratification, which was a result of vertical mixing when air temperature drawdown in eutrophyical Reservoir, and also was another manifestation of eutrophycation of deep water reservior in Guizhou Altiplano.
夏品华, 林陶, 李存雄, 薛飞, 张邦喜, 蒋瑶. 贵州高原红枫湖水库季节性分层的水环境质量响应[J]. 中国环境科学, 2011, 31(9): 1477-1485.
XIA Pin-Hua, LIN Tao, LI Cun-Xiong, XUE Fei, ZHANG Bang-Xi, JIANG Yao. Features of the water column stratification and the response of water quality of Hongfeng reservoir in Guizhou, China. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(9): 1477-1485.