Scholarlink

<p>Upcycling food waste and food processing by-products as animal feed could reduce livestock-related emissions, but rebound effects, where lower feed costs lead to livestock expansion, may diminish these benefits. Here, using an integrated environmental–economic model, we assess the impacts of this upcycling in China’s monogastric livestock production. We find that upcycling increases monogastric livestock production by 23–36% and raises total acidification emissions in China by 2.5–4.0%, while domestically total greenhouse gas emissions decrease by 0.5–1.4% through less waste sent to landfill and incinerators and a contraction in non-food production. This upcycling enhances food security and has substantial knock-on effects beyond the agricultural sectors, through influencing sectoral employment, gross domestic product and household welfare. Although emission taxes could absorb the rebound effects on emissions, they may also negatively impact food security and shift emissions abroad, depending on tax levels.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Rebound effects may undermine the benefits of upcycling food waste and food processing by-products as animal feed in China

  • 期刊论文

  • 发表日期：

    2025年8月26日

查看全文
  • Weitong Long,
  • Xueqin Zhu,
  • Hans-Peter Weikard,
  • Oene Oenema,
  • Yong Hou

摘要

Upcycling food waste and food processing by-products as animal feed could reduce livestock-related emissions, but rebound effects, where lower feed costs lead to livestock expansion, may diminish these benefits. Here, using an integrated environmental–economic model, we assess the impacts of this upcycling in China’s monogastric livestock production. We find that upcycling increases monogastric livestock production by 23–36% and raises total acidification emissions in China by 2.5–4.0%, while domestically total greenhouse gas emissions decrease by 0.5–1.4% through less waste sent to landfill and incinerators and a contraction in non-food production. This upcycling enhances food security and has substantial knock-on effects beyond the agricultural sectors, through influencing sectoral employment, gross domestic product and household welfare. Although emission taxes could absorb the rebound effects on emissions, they may also negatively impact food security and shift emissions abroad, depending on tax levels.