INFEWS: U.S.-China: Managing agricultural nitrogen to achieve sustainable Food-Energy-Water Nexus in China and the U.S.

INFEWS：中美：管理农业氮以实现中国和美国可持续的食品-能源-水关系

• 批准号: 2025826
• 负责人: Xin Zhang
• 金额: $ 50万
• 依托单位: University of Maryland Center for Environmental Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2025826&HistoricalAwards=false
• 关键词: INFEWS; U.S.; China; Managing; agricultural

China and the U.S. account for 40% of the global nitrogen (N) inputs to crop and livestock production systems and have crop nitrogen use efficiencies (NUE) of only 26% and 50% respectively. Despite many technological developments, these rates have not significantly improved in recent decades. Meanwhile only about one-third of manure is recycled in both countries. These losses of nutrients from fertilizers and manures to the environment have led to serious water pollution, waste of resources and energy, and possibly unrealized crop yield potential. These inefficiencies highlight the need to identify the socioeconomic and technological barriers for improving the efficiency of N use in crop and livestock production, as well as the sustainability of the food-energy-water (FEW) nexus. The main goal of this project is to investigate and identify viable approaches to improve the sustainability of the FEW nexus through N management in crop and livestock production in China and U.S. Recognizing differences between U.S. and Chinese agricultural systems and their socioeconomic contexts, a systems approach will facilitate a better understanding of the varying socioeconomic and technological barriers for NUE improvement, especially the factors beyond farm operations, and will help to unpack the N management challenges of each country. Specifically, this project will: 1) Characterize NUE and FEW sustainability in China and the U.S. on a county scale for crop and livestock production systems and their subsystems; 2) Investigate diverse socioeconomic and ecological drivers for NUE, manure recycling, and FEW sustainability, comparing key drivers in the two countries to inform NUE improvement; 3) Develop a policy-analysis tool to optimize the crop and livestock production systems for different FEW sustainability goals on spatial scale within each country; and 4) Assess the challenges and opportunities for 1-3 under different trade relationship scenarios. This project will advance knowledge of the dynamics in the FEW nexus by assessing the complex interactions between N management and the FEW nexus throughout the processes of crop and livestock production. The project will employ state-of-art models and recently available datasets and information, using consistent methodologies in both countries. Taking a comprehensive view of N flows across spatial, temporal, and system scales, this project will inform understanding of potential innovative policies, technology developments, impediments to adoption of improved management, and potential changes in production structure and trade for improving FEW sustainability.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

中国和美国占全球农作物和畜牧生产系统氮输入的 40%，而农作物氮利用效率 (NUE) 分别仅为 26% 和 50%。尽管技术取得了许多进步，但近几十年来这些比率并没有显着提高。与此同时，这两个国家只有约三分之一的粪便得到回收。化肥和粪便中的养分流失到环境中，导致了严重的水污染、资源和能源的浪费，并可能导致作物产量潜力无法发挥。这些低效率凸显出需要确定社会经济和技术障碍，以提高农作物和牲畜生产中氮的利用效率，以及粮食-能源-水（FEW）关系的可持续性。该项目的主要目标是调查和确定可行的方法，通过中国和美国农作物和畜牧生产中的氮管理来提高 FEW 关系的可持续性。认识到美国和中国农业系统及其社会经济背景之间的差异，系统方法将促进更好地了解改善氮肥利用率的不同社会经济和技术障碍，特别是农场运营之外的因素，并将有助于解决每个国家的氮肥管理挑战。具体来说，该项目将： 1) 描述中国和美国在县级范围内农作物和畜牧生产系统及其子系统的 NUE 和 FEW 可持续性； 2) 调查 NUE、粪便回收和 FEW 可持续性的多种社会经济和生态驱动因素，比较两国的关键驱动因素，为 NUE 的改善提供信息； 3) 开发政策分析工具，优化农作物和畜牧生产系统，以实现各国空间尺度上不同的 FEW 可持续发展目标； 4) 评估不同贸易关系情景下1-3的挑战和机遇。该项目将通过评估整个作物和牲畜生产过程中氮管理和 FEW 关系之间复杂的相互作用，增进对 FEW 关系动态的了解。该项目将采用最先进的模型以及最近可用的数据集和信息，并在两国使用一致的方法。该项目将全面了解跨空间、时间和系统尺度的氮流，有助于了解潜在的创新政策、技术发展、采用改进管理的障碍以及生产结构和贸易的潜在变化，以提高 FEW 的可持续性。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

A Hierarchical Framework for Unpacking the Nitrogen Challenge

应对氮挑战的分层框架

• DOI: 10.1029/2022ef002870
• 发表时间: 2022-11
• 期刊: Earth's Future
• 作者: Li, Tingyu;Zhang, Xin;Zhong, Yuxiu;Davidson, Eric A.;Dou, Zhengxia;Zhang, Weifeng;Pavinato, Paulo S.;Martinelli, Luiz A.;Kanter, David R.;Liu, Jianguo;et al
• 通讯作者: et al

Environmental and human health trade-offs in potential Chinese dietary shifts

中国潜在饮食转变中的环境和人类健康权衡

• DOI: 10.1016/j.oneear.2022.02.002
• 发表时间: 2022-03-01
• 期刊: One Earth
• 影响因子: 16.2
• 作者: Yixin Guo;Pan He;T. Searchinger;Youfan Chen;M. Springmann;Mi Zhou;Xin Zhang;Lin Zhang;D
• 通讯作者: D

Implication of imposing fertilizer limitations on energy, agriculture, and land systems

施肥限制对能源、农业和土地系统的影响

• DOI: 10.1016/j.jenvman.2021.114391
• 发表时间: 2022-03
• 期刊: Journal of Environmental Management
• 影响因子: 8.7
• 作者: Sinha, Eva;Calvin, Katherine V.;Kyle, Page G.;Hejazi, Mohamad I.;Waldhoff, Stephanie T.;Huang, Maoyi;Vishwakarma, Srishti;Zhang, Xin
• 通讯作者: Zhang, Xin

Different quantification approaches for nitrogen use efficiency lead to divergent estimates with varying advantages

氮利用效率的不同量化方法导致不同优势的不同估计

• DOI: 10.1038/s43016-021-00263-3
• 发表时间: 2021-04
• 期刊: Nature Food
• 影响因子: 23.2
• 作者: Quan, Zhi;Zhang, Xin;Fang, Yunting;Davidson, Eric A.
• 通讯作者: Davidson, Eric A.

Quantification of global and national nitrogen budgets for crop production

全球和国家作物生产氮预算的量化

• DOI: 10.1038/s43016-021-00318-5
• 发表时间: 2021-07
• 期刊: Nature Food
• 影响因子: 23.2
• 作者: Zhang, Xin;Zou, Tan;Lassaletta, Luis;Mueller, Nathaniel D.;Tubiello, Francesco N.;Lisk, Matthew D.;Lu, Chaoqun;Conant, Richard T.;Dorich, Christopher D.;Gerber, James;et al
• 通讯作者: et al