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水库面积1693 ha,1993年伴随养鱼饲料进入水体的 TN96.27 t,TP34.04 t,成为水库的污染源。一年沉积库底的残饵、粪便经推算为1625 t,构成内负荷二次污染源。对网箱区内外水体 SD、TN、TP、Chla、H_2S、浮游植物和底栖动物的测定结果表明。网箱锌鱼已促进了网箱区水质富营养化。DO 减少、缺氧层增厚是水环境变化的一个重要标志,并直接影响网箱养鱼效果。为保证该水库多功能的正常发挥,在保持网箱养鱼现有125 kg/m~2生产水平的情况下,建议网箱规模控制在13 300 m~2以内。
The reservoir area is 1693 ha. In 1993, TN96.27 t and TP34.04 t, which accompany the fish feed into the water body, became the pollution source of the reservoir. One year sediment base of bait, stool was calculated as 1625t, constitute secondary load source of internal pollution. The results of the determination of phytoplankton and zoobenthos in SD, TN, TP, Chla, H 2 S inside and outside the cage area showed. Cages Zinc fish have contributed to the eutrophication of the cages water area. DO decreases, hypoxia layer thickening is an important indicator of changes in water environment, and directly affect the cage fish culture effect. In order to ensure the multi-functional normal operation of this reservoir, it is suggested that the scale of the cage should be controlled within 13 300 m ~ 2 while maintaining the current production level of 125 kg / m ~ 2 in cage fish farming.