不同养殖结构鱼塘能量生态学研究

本文从养针池生态系统利用能量利用各环节，分析了两种不同养殖结构鱼生态学能量利用效率。主养草食性鱼类，其输入的总补助能，光合能、生物能的转换效率分别为９．８６％、６．９２％、１０．１０％；其生产吨鱼总补且能、光合能、生物能分别为４６．６４ＧＪ、６６．４６ＧＪ、４５．５４ＧＪ。而对于主养滤食性鲢、鳙的池塘，其对应的指标 ８．３．％、３．７５％、８．６６％、４６．９９ＧＪ、１０５．５２ＧＪ、４５．７３Ｇ

ECOLOGY STUDY OF ENERGY IN FISH PONDS OF DIFFERENT CULTURING STRUCTURE

This paper analyzes the energy utilization efficiency on every section in different main cultivated fish ponds. In the pond of main cultivated grass carp, its transforming efficiency of the total supplement energyphotosynthetic energy and creature energy were 9.86%, 6.92% and 10.10% respectively. Meanwhile, the consumed energy of culturing one ton fish yield was 46.64GJ, 66.46GJ and 45.54GJ respectively. In the pond of main cultivated silver carp and big head carp, the appropriate data were 8.43%, 3.75%, 8.66%, 46.99GJ, 105.52GJ, 45.73GJ respectively. As the difference of main function in two ponds, there was some diversity for utilization the radiation by silver carp and big head carp. The net conversion efficiency was almost equal, which was from the primary productivity to the crops of the filtered food fish. The coefficient was 1.45% and 1.43% in main culturing grass carp fish pond and in main culturing silver carp and big head carp fish ponds. Based on the ecoeconomic index EY, the producing s