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统计表明 ,东湖 1995年浮游植物对太阳总幅射能利率为 0 81% ,鱼类对浮游植物净产量利用率为 2 2 2 % ,太阳能转移为鱼产量的生态学效率为 0 0 0 6 9%。能量转换系数总能为 0 91% ,其中 ,光合能1 0 1% ,生物能 9 12 % ,生物能 +工业能 8 99%。每生产吨鱼的能量消耗为 5 5 6 78GJ ,比 1991年低80 0 9%。这表明对东湖采取以施肥养鱼为主的综合开发提高了湖泊能量利用率 ,增加了鱼产量 ,又对水草资源和原有生态没有明显的负面影响。探讨了提高东湖能量转换效率应采取的措施
Statistics show that the rate of total solar radiation of phytoplankton to solar radiation in East Lake in 1995 was 81.1%, the net utilization of phytoplankton by fish was 22.2%, and the ecological efficiency of solar energy transfer to fish production was 0 0 0 6 9 %. The total energy conversion coefficient is 0 91%, of which photosynthetic energy is 101%, bioenergy is 9 12% and bioenergy + industrial energy is 8 99%. The energy consumption per ton of fish produced was 5567.8GJ, 809% lower than in 1991. This shows that the comprehensive utilization of fertilized fish in Donghu Lake has improved the utilization rate of lakes and increased the fish production, but has no obvious negative impact on the resources of aquatic plants and the original ecology. The measures to be taken to improve the energy conversion efficiency of Donghu Lake are discussed