长江流域2种水产养殖模式的生命周期环境影响评价  

Life Cycle Environmental Impact Assessment on Two Aquaculture Models in the Yangtze River Basin

作　　者：董寅 李冰[1,2] 贾睿[2] 侯诒然 刁维旭 朱健[1,2] DONG Yin;LI Bing;JIA Rui;HOU Yiran;DIAO Weixu;ZHU Jian(Wuxi Fisheries College,Nanjing Agricultural University,Wuxi 214081,China;Key Laboratory of Integrated Rice-Fish Farming Ecology,Ministry of Agriculture and Rural Affairs,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,China)

机构地区：[1]南京农业大学无锡渔业学院,江苏无锡214081 [2]中国水产科学研究院淡水渔业研究中心农业农村部稻渔综合种养生态重点实验室,江苏无锡214081

出　　处：《渔业科学进展》2024年第1期23-32,共10页Progress in Fishery Sciences

基　　金：财政部和农业农村部:国家现代农业产业技术体系(CARS-45-25);国家重点研发计划(2019YFD0900305);中国水产科学研究院基本科研业务费(2020TD60)共同资助。

摘　　要：本研究以长江流域内的池塘养殖和稻渔综合种养2种水产养殖模式为对象,应用生命周期评价方法,分析2种养殖模式对能源消耗(EU)、全球变暖潜势(GWP)、酸化潜势(AP)、富营养化潜势(EP)以及水资源消耗(WU)5种环境指标的影响,并探究2种主要输入因子(饲料和电力供应)和养殖过程对各环境指标的影响,从而评价2种养殖模式对环境影响的差异。生命周期评价结果标准化处理和加权评估显示,稻渔综合种养模式的WU、EP、GWP、AP和EU值分别为11.650、0.770、0.141、0.096和0.003,总环境影响指数(TEII)为12.660;池塘养殖模式的WU、EP、GWP、AP和EU值分别为31.453、1.187、0.210、0.174和0.007,TEII为33.031。与稻渔综合种养模式相比,池塘养殖模式的各项环境指标均较高。对环境影响的贡献率分析表明,饲料供应对EU、GWP和AP的贡献率最高,EP主要受饲料供应和养殖过程的共同影响,而WU主要集中在养殖过程中,电力供应主要影响EU、GWP和AP。生命周期评价的结果表明,与池塘养殖模式相比,稻渔综合种养模式显示出更友好的环境效益,在我国长江流域具有较大的发展空间。2种养殖模式的贡献率分析表明,改进饲料生产工艺、建立精准投喂技术、应用先进的尾水处理技术和适当提高养殖密度是我国长江流域水产养殖环境友好生产的关键。With the rapid development of aquaculture in China in recent decades,the country now faces environmental problems,such as high energy consumption and severe environmental pollution.The Yangtze River Basin is the most important area for freshwater aquaculture production in China,accounting for more than half of the total production.The environmental issues induced by aquaculture have received widespread consideration in this area.However,the freshwater farming-induced environmental issues in the Yangtze River Basin were rarely evaluated in prior research.Life cycle assessment(LCA)is a valid tool for assessing environmental impacts and resources and is widely deployed in the industrial sector.It can quantify the impact of a product or service on different environmental indicators at various stages of the production process,thereby aiding in the identification of the best measures to reduce environmental impacts.The LCA is more effective than traditional environmental impact assessment methods;thus,it has been gradually applied in other fields,such as agriculture and aquaculture,in recent years.In aquaculture,LCA has been used to evaluate the environmental impact of various farming models or species in a laboratory setting.However,little attention has been paid to large-scale systems,such as the Yangtze River Basin.The two most important farming models in China are the pond farming model and the integrated rice-fish farming model.Among them,the integrated rice-fish farming model is regarded as environmentally friendly and an important step towards realizing the sustainable development of aquaculture in terms of the efficient utilization of water and land resources.Therefore,in this study,the environmental effects of pond farming and integrated rice-fish farming models were investigated in the Yangtze River Basin using the LCA method.A total of 20 monitoring points were established in the Yangtze River Basin,including 5 for integrated rice-fish farming and 15 for pond culture.In the integrated rice-fish farming model

关 键 词：稻渔综合种养 池塘养殖 生命周期评价 环境影响 

分 类 号：X828[环境科学与工程—环境工程]