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    满足城市食物消费需求的农业生产碳排放研究——以宁波为例
    黄葳,胡元超,任艳,崔胜辉* ,高兵

       食物消费相关的农业生产阶段的碳排放研究,对于探讨气候变化背景下可持续消费模式的选择和低碳农业技术与管理的提升具有重要意义.以宁波市为例,采用生命周期分析与环境投入产出相结合的综合分析框架,对其2012 年居民所消费食物在农业生产阶段的直接和间接碳排放进行研究,分析不同食物及不同排放源的排放特征. 结果表明,粮食、猪肉、水产品和牛肉对食物消费碳排放总量的贡献最大,分别占28%、25%、10%和9%; 粮食、蔬菜和蛋类单位热量和单位蛋白质的碳排放均较小,禽、蛋、水产、鲜奶单位蛋白质的碳排放低于牛羊猪肉; 由农业投入品生产所带来的间接碳排放占总量的49%; 化肥是多数植物性食物碳排放最大的贡献源,占植物性食物排放总量的33%; 饲料是大多动物性食物碳排放的最大来源,占动物性食物排放总量的56%.为促进食物消费和农业生产的碳减排,一方面建议适当增加蛋类、水产品、禽类和鲜奶的消费比重,减少猪牛羊肉的消费比重; 另一方面应着重提高农业投入品供应链的能效,推广优化施肥技术与管理,以及提升饲料品质。

    Key words:食物消费; 碳排放; 农业生产; LCA-EIO; 宁波

    Volume:35

    Page:4102-4111

    Journal:环境科学学报

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