A hydroecological study of eutrophic Yongding Reservoir |
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| Authors: | Zhu Xin-yuan Zhu Jiang Li Li-xin Chen Shu-yun |
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| Institution: | (1) Beijing Municipal Research Institute of Environmental Protection, 100031 Beijing;(2) Institute of Zoology, Chinese Academy of Sciences, 100080 Beijing;(3) Academy of Beijing Coke Chemical Factory, 100023 Beijing |
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| Abstract: | The water quality of Yongding Reservoir was evaluated by using aquatic ecological techniques combined with chemical and physical
methods. Of the 14 biological, chemical and physical parameters examined in this study, 10, including primary productivity
and chlorophylla, were found to exceed the critical levels for eutrophic waters. Most of the indicators and Carlson's Comprehensive Trophic
State Index (TST) indices indicated that the water quality of the western side of the reservoir was worse than that of the
eastern side. Polluted water from the Yongding River was considered a main source of pollutants in the reservoir, while the
farming of carp in net cages also contributed to the low water quality. A comparison of the water quality data in 1982 and
1988 indicated that the rate of eutrophication of Yongding Reservoir was alarming. |
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| Keywords: | Yongding Reservoir eutrophication |
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