三峡库区富营养化发展趋势研究

The Study on the Trend of Eutrophication in the Three Gorges Reservoir

通过对三峡库区次级河流回水区段富营养化的发展潜势及其分布规律进行历时3 a的跟踪监测和研究,得出如下结论:三峡库区每条次级河流回水区每年都会发生一定程度的富营养化现象,富营养化发生的时期主要是在4月—9月(春夏之交、夏季及夏秋之交),并且随着靠近坝首,富营养化有加重趋势。三峡库区蓄水后的实际监测结果进一步证实了该项研究的结论。

From the monitoring and study of the trend and distribution rules of the eutrophication in the Three Gorges Reservoir in three years, we concluded some conclusions as follows： There were some eutrophication in the backwater reach of every branch of the Three Gorges Reservoir each year. And they occurred in the times from April to September, especially the alternation of spring to summer or summer to autumn. The eutrophication was more serious when the water was near the front of the dam. These conclusions were approved by actual monitoring after the water storage of the Three Gorges Reservoir.