文章摘要
卢迈新.养鳗池塘的初级生产力和能量转换效率[J].水产学报,2000,24(1):
养鳗池塘的初级生产力和能量转换效率
Primary productivity and energy conversion efficiency in eel pond
投稿时间:2014-04-17  修订日期:2014-04-17
DOI:
中文关键词: 养鳗池塘 初级生产力 能量转换效率
英文关键词: eel pond, primary productivity, energy conversion eff iciency
基金项目:农业部“九五”重点科研资助!(池塘养鳗高效高产养殖理论与实用技术的研究 ) ;渔 95 -C -96-12号
作者单位地址
卢迈新 中国水产科学研究院珠江水产研究所 中国水产科学研究院珠江水产研究所
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中文摘要:
      报道了养鳗池塘初级生产力的垂直变化和季节变化。养鳗池塘的初级生产量为 3.5 1~ 7.90gO2 /m2 ·day ,高峰通常出现在 7~ 8月。 1米以上水层的光合作用产氧量占水柱总产量的 90 %以上。平均补偿深度为 6 5~ 74cm。池水氧气的消耗 ,池鱼占 2 7.4% ,“水呼吸”占 70 .0 % ,底泥占 3.6 %。浮游植物光合产氧占池塘氧气来源的 6 6 .0 % ,余下的 43.0 %靠空气和加水补给。毛初级生产力对太阳辐射能的利用率为 0 .38%~ 0 .85 % ;鳙产量对浮游植物的利用率为 1 .0 5 %~ 2 .32 % ;太阳能转移为鱼产量的生态学效率为 0 .0 0 9%~ 0 .0 1 0 %。
英文摘要:
      The vertical and seasonal changes of primary productivity in eel ponds were reported in this paper. The gross oxygen production in water column in eel ponds ranged 3. 51- 7. 90 g O2/ m2..day and the peak appeared in July to August. The photosynthetic oxygen production one meter or less below the water surface accounted for over 90% of the total production. The average compensation depth was 65- 74cm. Among the total oxygen consumption, fish occupied 22. 4%, .. water respiration.. 71. 3%, and detritus 6. 4% respectively. The oxygen production by photosynthesis accounted 67. 7% of the oxygen resources of eel ponds, the rest was supplied by air- dissolved and water- f illing. The photosynthetic energy effciency reached 0. 38% - 0. 85% of solar radiation. The efficiency of converting phytoplankton production to the yield of big- head carp was 1. 05% - 2. 32% and the ecological eff iciency of converting solar radiation to f ish production was 0. 009%- 0. 010% .
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