RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2005, Vol. 14 >> Issue (4): 440-444.

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FORECAST OF AQUATIC EUTROPHICATION AND ITS HARMS AND THE PREVENTION COUNTERMEASURES IN WATERLEVELFLUCTUATING ZONE OF THE THREE GORGES RESERVOIR

XU Chuan(1), SHU Wei-qun(1), CAO Jia(2), WANG Yang(3)   

  • Received:1900-01-01 Revised:1900-01-01 Online:2005-07-20
  • Contact: XU Chuan

Abstract: After the completion of the Three Gorges Project, a 30 meters high permanent waterlevelfluctuating zone (WLFZ) will appear. WLFZ is an extraordinary and the most fragile zone with aquatic and land ecosystems. Because of the start of the Three Gorges Project of the Yangtze River and the increasing industrial and municipal wastewater, the flow velocity of the Yangtze River will slow down greatly and the selfpurification ability of the river will decline. The input of excessive macronutrients (nitrogen and phosphorus) pollution will become more serious in WLFZ. According to the special situation of the waterlevelfluctuating zone, the protection and countermeasures should be brought forward so as to improve the ecosystem restoration of the Three Gorges reservoir.

Key words: Three Gorges reservoir, waterlevelfluctuating zone, eutrophication, microcystin/MC, prevention countermeasures

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