关键词: 水口水库, 樟湖库湾, 网箱养殖, 沉积物, 硫化物

Abstract: In order to understand the impact of sulfide at feeding cage farming area in reservoir, the spatial distribution, seasonal change and pollution assessment of sulfide in the surface sediments at cage farming area of Zhanghu reservoir bay in Shuikou reservoir were studied. The results indicated that the sulfide concentrations ranged from 0.573 5~2.364 2 μmol?g-1, which was approaching the strength of open lakes and rivers. Compared with the properties of sulfide contents from inside and outside the cage area, the previous one was relatively high, and the multiple of difference varied from 1.67 to 2.95 between summer and winter, which were higher than those from 1.34 to 1.83, the results showed that cage culture activities had a certain impact on the accumulation of sediment sulfide. It was found that the seasonal variation of sulfide were in the order of summer＞spring＞autumn＞winter, which showed that the change law was related to cage culture activities. The background value of sulfide content was high in Min River basin, indicating that the accumulation of sulfide in the sediments was more affected by the external non-point source pollution.

Key words: Shuikou reservoir, Zhanghu reservoir bay, cage farming, sediment, sulfide