Scholarlink

<p>The present study investigates nitrogen (N) flows within the food system of Yamanashi Prefecture from 2000 to 2015, by longitudinally integrating Input–Output analyses with N flow models. By unveiling detailed N flows specifically in the food manufacturing sector (food processing, distribution, and food service), this study aims to analyse the recyclability of N losses quantitatively. Results showed approximately 60% of the total N input resulted in N loss. The N losses can be classified into highly recyclable nitrogen (high-RAN: 11%), low-recyclable nitrogen (low-RAN: 16%) and non-recyclable nitrogen (non-RAN: 73%). A comparative analysis was performed with three scenarios according to the Green Food System Strategy: a control scenario of 2050, Scenario l targeting chemical fertilizer reduction, and Scenario 2 targeting chemical fertilizer reduction and increased feed self-sufficiency. Compared to the control, both Scenario 1 and Scenario 2 demonstrated improvements in N recycling efficiencies by 4.9% and 15.0%, respectively. Notably, the Scenario 2, which separately reutilised high-RAN and low-RAN, expanded the N demand for recycling, achieving a 6.4% enhanced N loss reduction compared to the Scenario 1. In conclusion, this study provides the suggestion that the sophistication of the reutilisation network can promote the reduction of N losses.</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

Nitrogen loss in a region with developed food industries: a new method of nitrogen flow and recyclability analysis focusing on distribution system

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月25日

查看全文
  • Kota Kato,
  • Makoto Saiki,
  • Nga Thu Do,
  • Kazuki Mochizuki,
  • Kei Nishida

摘要

The present study investigates nitrogen (N) flows within the food system of Yamanashi Prefecture from 2000 to 2015, by longitudinally integrating Input–Output analyses with N flow models. By unveiling detailed N flows specifically in the food manufacturing sector (food processing, distribution, and food service), this study aims to analyse the recyclability of N losses quantitatively. Results showed approximately 60% of the total N input resulted in N loss. The N losses can be classified into highly recyclable nitrogen (high-RAN: 11%), low-recyclable nitrogen (low-RAN: 16%) and non-recyclable nitrogen (non-RAN: 73%). A comparative analysis was performed with three scenarios according to the Green Food System Strategy: a control scenario of 2050, Scenario l targeting chemical fertilizer reduction, and Scenario 2 targeting chemical fertilizer reduction and increased feed self-sufficiency. Compared to the control, both Scenario 1 and Scenario 2 demonstrated improvements in N recycling efficiencies by 4.9% and 15.0%, respectively. Notably, the Scenario 2, which separately reutilised high-RAN and low-RAN, expanded the N demand for recycling, achieving a 6.4% enhanced N loss reduction compared to the Scenario 1. In conclusion, this study provides the suggestion that the sophistication of the reutilisation network can promote the reduction of N losses.