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论文类型：期刊论文

发表时间：2015-10-01

发表刊物：SCIENCE OF THE TOTAL ENVIRONMENT

收录刊物：SCIE、EI、PubMed、Scopus

卷号：529

页面范围：191-197

ISSN号：0048-9697

关键字：Food consumption; Food waste; Carbon footprint; Water footprint; Ecological footprint; Household

摘要：Strategies for reducing food waste and developing sustainable diets require information about the impacts of consumption behavior and waste generation on climatic, water, and land resources. We quantified the carbon, water, and ecological footprints of 17,110 family members of Chinese households, covering 1935 types of foods, by combining survey data with available life-cycle assessment data sets. We also summarized the patterns of both food consumption and waste generation and analyzed the factors influencing the observed trends. The average person wasted (consumed) 16 (415) kg of food at home annually, equivalent to 40 (1080) kg CO(2)e, 18 (673) m(3), and 173 (4956) gm(2) for the carbon, water and ecological footprints, respectively. The generation of food waste was highly correlated with consumption for various food groups. For example, vegetables, rice, and wheat were consumed the most and accounted for the most waste. In addition to the three plant-derived food groups, pork and aquatic products also contributed greatly to embedded footprints. The data obtained in this study could be used for assessing national food security or the carrying capacity of resources. (C) 2015 Elsevier B.V. All rights reserved.