巴西与粮食损失和浪费有关的水损失

IF 0.5 Q4 ENVIRONMENTAL SCIENCES Revista Brasileira de Ciencias Ambientais Pub Date : 2021-06-23 DOI:10.5327/z21769478885
E. Cohim, Adriano Souza Leão, H. C. D. Silva, G. S. Santos
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引用次数: 0

摘要

本文旨在估算2013年巴西与粮食损失和浪费相关的水资源损失。使用了联合国粮食及农业组织(FAO)关于粮食平衡和浪费的数据,以及水足迹网络(WFN)提供的农产品水足迹数据。结果显示,每年食物浪费达到4900万公吨,共消耗870亿立方米的水,高于旧金山河的年平均流量。主要的水损失与农业生产阶段有关(32%),其次是消耗(19%)。在食物组中,主要的水分损失与肉类有关(49%),其次是谷物(19%)。大约96%的水损失归因于绿色水成分,这突出表明必须关注雨水农业,以确保每个人的食物和水。蓝色水的损失超过了城市部门消耗量的一半,灰色成分(污染水)相当于消耗量的80%。改善农业实践、物流、灌溉、扩大和改善雨养农业、制定减少初级产品出口以及减少动物源产品消费的运动和政策等措施,有助于在以水为重点的情况下更可持续地管理粮食供应链。减少食物损失和浪费意味着保存水。
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Water loss associated with food loss and waste in Brazil
This article aimed to estimate the loss of water associated with food loss and waste in Brazil in 2013. Data from the Food and Agriculture Organization (FAO) of the United Nations (UN) on food balance and waste, as well as the Water Footprint (WF) of agricultural products available at Water Footprint Network (WFN) were used. Results show that food waste reaches 49 million metric tons per year, compromising a total of 87 billion cubic meters of water, which is higher than the average annual flow of the river São Francisco. Major water loss is associated with the agricultural production stage (32%), followed by consumption (19%). Amongst food groups, major water loss is associated with meat (49%), followed by cereals (19%). Roughly 96% of water loss is attributed to the green water component, which highlights that attention must be paid to rainfed agriculture to ensure food and water for everyone. The loss of blue water was more than half of the volume consumed in the urban sector, and the grey component (polluted water) was equivalent to 80% of this consumption. Measures such as improving agricultural practices, logistics, irrigation, expanding and improving rainfed agriculture, developing campaigns and policies to reduce exportation of primary products, as well as consumption of products from animal origin, can contribute to managing the food supply chain more sustainably when the focus is water. Reducing food loss and waste means preserving water.
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来源期刊
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发文量
15
审稿时长
25 weeks
期刊最新文献
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