| Autor: |
Fanlei MENG, Menru WANG, Yong HOU, Lin MA, Wenqi MA, Xuejun LIU, Fusuo ZHANG, Wen XU |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Frontiers of Agricultural Science and Engineering, Vol 11, Iss 1, Pp 113-121 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2095-7505 |
| DOI: |
10.15302/J-FASE-2024540 |
| Popis: |
● The framework of multi-objective nitrogen (N) management was developed.● Multi-objective targets were established to support agriculture sustainable production.● A food chain approach was developed to accurately quantify N flow in food system.● “3R” principle was used in developing N management strategy.● The collaboration with different stakeholders is crucial for promoting technologies.Nitrogen (N) is an essential nutrient for food production. The rapid increase in population requires high inputs of N to meet the growing food demand. If not managed well, the substantial loss of N from the food system has multiple impacts on grain yield, air and water pollution, and the economic benefits of agricultural. Multi-objective (food security, environmental sustainability and economic sustainability) synergistic consideration of N management in the food system is still lacking. This study employed strategies for optimizing N management in the food system, using Quzhou County as a typical example on the North China Plain. Firstly, a food chain approach was adopted to understand drivers and reasons behind N losses from the food system. Secondly, a top-down approach was used to define multi-objective N management, taking into consideration food security, environmental sustainability and economic sustainability. Multi-objective N management aims to reduce N losses to the environment and increase N use efficiencies, while simultaneously increasing yields and economic benefits. Thirdly, 3R (reduce-retain-recycle) N management strategies were identified for specific crops and animals through a bottom-up approach and then analyzed the potential of these strategies to achieve the multi-objectives. Finally, there is a discussion of how to engage different stakeholders to promote the technologies implementation. This study provides new insights into the synergistic achievement of multi-objective N management in the food system and the development of environmentally-friendly agriculture. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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