3Li L J, Lu H F, Ren H, et al. Emergy Evaluations of Three Aq- uaculture System on Wetlands Surrounding the Pearl River Estu- ary, China[-J~. Ecological Indicators, 2011, 11: 526-534.
4Zhang L X, Ulgiati S , Yang Z F , et al. Emergy evaluation and economic analysis of three wetland fish farming systems in Nansi Lake Areal-J]. China Journal of Environmental Management, 2011, 92: 683-694.
5Lan S F , (Mum H T , Liu X M. Energy flow and emergy analy- sis of the agroecosystems of Chinal-J~. Ecological Science, 1998, 17(1): 32-39.
6Odum H T. Emergy Evaluation of Salmon Pen Culture[C]. IIFET 2000 Proceedings. Gainesville: University of Florida Press, 2001.
