摘要
[目的]评价流水养殖模式与循环水养殖模式对环境的影响。[方法]采用生命周期评价方法,以单尾大菱鲆增重50 g为功能单位,将2种模式分为饲料生产、电力生产和养殖系统排放3个阶段,从能源消耗、全球变暖影响、酸化潜势和富营养化潜势等方面评价2种模式对环境的影响。[结果]流水养殖模式的4种环境影响类型指数分别为2.96×10-7、1.19×10-4、4.62×10-5和1.20×10-3,而循环水养殖模式的4种环境影响类型指数分别为4.43×10-7、1.85×10-4、7.00×10-5和5.05×10-4。2种养殖模式的的综合指数分别为0.001 37和0.000 76。[结论]循环水养殖模式的环境性能优于流水养殖模式。
[Objective] The present study was conducted to compare the potential environmental impacts of two culture types.[Method]Based on the function unit of 50 g weight gain for turbot and with analysis of life cycle assessment（LCA）.Two aquaculture models were consisted of three stages：feed production,electricity production and aquaculture waste discharge.The evaluation of environmental impacts is carried out from four aspects：energy use,global warming potential,acidification and eutrophication potential.[Result] The results show that four kinds of environmental impact indexes of flow-through aquaculture were 2.96 ×10^-,1.19 ×10^-,4.62 ×10^- and 1.2 ×10^-.The four kinds of environmental impact indexes of recirculating aquaculture were 4.43 ×10^-,1.85 ×10^-,7.00 ×10^- and 5.05 ×10^-.The comprehensive life cycle environmental impact indexes of the aquaculture models were 0.001 37 and 0.000 76.[Conclusion] The environmental impact of recirculating aquaculture is better than flow-through aquaculture.
出处
《安徽农业科学》
CAS
2014年第14期4380-4383,共4页
Journal of Anhui Agricultural Sciences
基金
国家科技支撑计划课题(2011BAD13B04)
公益性行业(农业)科研专项经费项目(201003024)
关键词
流水养殖模式
循环水养殖模式
大菱鲆
生命周期评价
环境影响
Flow-through system
Recirculating aquaculture system
Turbot
Life cycle assessment
Environmental impact
