Emergy evaluation of largemouth bass (Micropterus salmoides) aquaculture system in the Pearl River Delta, China

• ZHANG Kai, 
• YU Deguang, 
• XIE Jun, 
• WANG Guangjun, 
• YU Ermeng, 
• GONG Wangbao, 
• LI Zhifei, 
• WEI Nan, 
• XIA Yun, 
• WANG Cuicui, 
• LIU Banghui