Dynamic emergy evaluation of a fish farm rearing process

Emergy evaluation and economic analysis of three wetland fish farming systems in Nansi Lake area, China

“…After nearly 30 years of development and application, the emergy synthesis approach has become a more common and tested evaluation method for ecological economic systems and processes (Brown and Ulgiati, 2004a;Hau and Bakshi, 2004), with special focus on the agricultural field (Lefroy and Rydberg, 2003;Castellini et al, 2006;Cavalett et al, 2006;Chen et al, 2006;Cohen et al, 2006;Cuadra and Rydberg, 2006;Martin et al, 2006;Zhang et al, 2007;La et al, 2008;De Barros et al, 2009). However, so far there have been only a few emergy studies that specifically evaluate fishery production systems (Odum, 2001;Zuo et al, 2004;Vassallo et al, 2007Vassallo et al, , 2009. A careful emergy evaluation of the aquaculture sector in China can bring up new insights on the management of fishery production systems, which would provide complementary information on its environmental sustainability and indicate the potential for improvement.…”

Integrated emergy, energy and economic evaluation of rice and vegetable production systems in alluvial paddy fields: Implications for agricultural policy in China

“…Thus, EST has been proposed as a bridge between ecology and the economy by some scientists (Lan et al, 2002). In the past 30 years the theory and methods have been developed and Emergy Synthesis has become a mature ecologicaleconomic evaluation tool, and it has been widely used in the evaluation of agricultural systems on many scales from that of a single farm to the agricultural system supporting a nation (Ulgiati et al, 1993;Odum, 1996Odum, , 2004Lan et al, 1998;Bastianoni et al, 2001;Cavalett et al, 2006;Chen et al, 2006;Lu et al, 2006;Castellini et al, 2006;Pizzigallo et al, 2008;Vassallo et al, 2009;Xi and Qin, 2009;Campbell, 2001). However, arguments about the relationships that exist among emergy synthesis, energy analysis, and economic evaluation are still unsettled (Huang and Odum, 1991;Brown and Herendeen, 1996;Castellini et al, 2006;Maud, 2007;Bastianoni et al, 2007;Franzese et al, 2009), with the latter two methods being applied much more often than the first one (Akbolat et al, 2006;Gündogmus and Bayramoglu, 2006;Shahan et al, 2008;Shalin et al, 2008;Pimentel, 2009).…”

Emergy assessment of three home courtyard agriculture production systems in Tibet Autonomous Region, China

“…This method takes into consideration information, material, energy, and monetary flows from both natural and economic systems that were acquired directly or indirectly to create products and services, and all of these resources can be translated into the common unit, solar emjoule or sej (Odum, 1988;Lan et al, 2002). Emergy Analysis has been applied to different fields, and it has become a promising tool for evaluation of ecological-economic systems (Castellini et al, 2006;Zhang et al, 2007;Coppola et al, 2009;Vassallo et al, 2009). In addition, it has been used to assess agricultural production on different scales (Campbell, 2001;Chen et al, 2006;la Rosa et al, 2008;Pizzigallo et al, 2008;Xi and Qin, 2009;Lu et al, 2010).…”