四川丘区猪肉生产生命周期资源消耗和环境污染研究

Resource Depletion and Pollution in Life Cycle of Pork Production at Foothill of Sichuan Province

采用生命周期方法学和情景分析法相结合的方式,对四川丘区3种典型的养猪生产情景进行了猪肉生产的生命周期资源消耗和环境污染分析。结果表明,设定参数下不同的生产系统具有不同的环境影响方式:情景A(散养模式)具有最大的气候变暖潜势(4.8128kg CO2-eqv·FU-1),情景B(适度规模养猪)具有土地占用最多(12.13m·2FU-1)、不可更新能源消耗最大(18.2MJ·FU-1)、酸化效应(0.0643665kg SO2-eqv·FU-1)和富营养化(1.81695kg O2-eqv·FU-1)最严重等,而情景C(集约化养猪)水资源消耗(1942.69kg·FU-1)最大。此研究揭示了四川丘区主要养猪模式中的污染物排放和资源消耗差异及其影响因素,为养猪业可持续发展规划提供了一定的参考依据。

The Scenario Analysis and Life Cycle Assessmen（tLCA）methods were combined to conduct a Life Cycle resource depletion and pollution analysis on three typical pork production scenarios at foothill of Sichuan Province,so that serious environment issues underlying the different systems of pork production could be profoundly understood.The results showed that global warming potential was maximum in scenario A（focusing on farmer family backyard breeding,4.812 8 kgCO2-eqv·FU-1）,but land use and unrenewable resources depletion,eutrophicationpotential andacidificationpotential weremaximuminscenarioB（focusingon100-headsizefarm,12.13m·2FU-1,18.2 MJ·FU-1,0.064 366 5 kgSO2-eqv·FU-1,1.816 95 kgO2-eqv·FU-1,respectively）,water use was maximum in scenario C（intensive farm,1 942.69 kg·FU-1）.The profiles of pollutants emission and resource efficiency were discovered so that an important foundation of environmental impact assessment for current pork production was set up.