RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2006, Vol. 15 >> Issue (Sup1): 116-119.

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EFFECTS OF SEDIMENT IN THE THREE GORGES RESERVOIR AREA ON THE DIATOM'S GROWTH IN DIFFERENT INITIAL CONCENTRATION

ZHANG Zhi| ZHANG Xianzhong   

  • Received:1900-01-01 Revised:1900-01-01 Online:2006-12-20

Abstract:

There is a mass of suspended sediment in the Three Gorges Reservoir. The impact of the suspended sediment on water environment should be paid more attention to. In order to discuss the influence of sediment on the algaes growth and provide the basis for the eutrophication forecast and control，this paper reports the influence of sediment on the diatoms growth on the condition of suitable illumination,water temperature and nutrition salt. The result revealed that appropriate amount of sediment was beneficial to diatoms growth. In the water sample of 0.0 and 0.2 kg/m3，the peak density of Chlorophylla exceeded the initial quantity and other four water samples.

Key words: the Three Gorges Reservoir Area, sediment, eutrophication, diatom

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