以氮(N)和磷(P)2种重要营养盐为研究对象,提出负责任养殖概念,建立了基于负责任养殖模式下的鱼、藻复合养殖海区的规划模型.这一模式下仅考虑人工养殖行为,饲料作为养殖海区唯一的营养盐输入途径,鱼类和经济藻类作为营养盐输出途径,不考虑海水交换、自然海区藻类营养盐吸收、野生鱼类残饵摄食和生物降解等因素引起的营养盐吸收和转化过程.研究表明,鱼、藻复合养殖模式可以实现负责任养殖行为,但鱼类和藻类养殖规模比例悬殊,藻类羊栖菜(Sargassum fusiforme)和鱼类大黄鱼(Pseudosciaena crocea)的养殖面积比约为95∶1,生物量比值约为30∶1.单纯采用经济藻类养殖作为养殖海区营养盐平衡手段效果有限,可以考虑增加贝类养殖,加强海区营养盐转移功能.%By studying nitrogen and phosphate nutrients, we proposed a model for planning composite fish-algae culturing sites based on a responsible fanning concept. The model only considers artificial breeding activities, regarding feed as the only nutrient input while fish and algae as nutrient output, but not regarding of the absorption and transfer caused by exchange of sea water, nutrient absorption by natural algae, uneaten food ingested by natural animals, feces biodegradation, etc.. The result demonstrates that responsible farming can be realized by composite fish-algae culture. However, the ratio of farming scales shows great disparity between fish and algae. The ratio of algae (Sargassumfusiforme) and fish (Pseudosciaena crocea) is 95 : 1, and their biomass ratio is 30 : 1. It is recommended to combine shellfish farming with algae to increase nutrient transfer.
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