半滑舌鳎工厂化循环水养殖模式能值评价

摘要

为了更好地评价半滑舌鳎（Cynoglossus semilaevis Günther）在工厂化循化水养殖模式下的养殖效果及环境可持续性，运用能值理论及分析方法构建了半滑舌鳎循环水养殖模式能值流程图，并对此养殖模式各能值分布进行分析。结果表明：循环水养殖模式环境能值投入只占比1.08%，能值产出率（EYR）为2.433，环境负载率（ELR）为0.3134，能值可持续发展指标（ESI）为7.763，表明此种养殖模式已经将农业生产提升至工业化水平，其经济系统发展程度高，生产效率较高；同时该养殖模式极大地减轻了对环境的压力，其可持续性和环境容纳量均较高。%In order to preferably evaluate breeding effect and environmental sustainability of recirculating aquaculture mode,the emergy flow chart of Cynoglossus semilaevis Günther in in-dustrial recirculating aquaculture was built to analyze the emergy of different parts in the aqua-culture mode. The results showed that:The environment emergy input occupied only 1.08%, emergy yield ratio (EYR) was 2.433,emergy loading ratio (ELR) was 0.313 4,and emergy sus-tainable index (ESI) was 7.763,indicating that agricultural production was promoted to the lev-el of industrialization with the use of this kind of aquaculture mode,which gains highly devel-oped economic system and higher production efficiency;meanwhile,this kind of aquaculture mode greatly alleviates the pressure of environment and gains higher sustainability and carrying capacity.