Divergent nitrogen transition pathways during global agricultural development
Bozal-Leorri, A.; Corrochano-Monsalve, M. · systems biology · 2026-09-06 · 原文
DOI：10.64898/2026.09.03.749081作者：2 位
Reactive nitrogen (N) inputs underpin global food production, but increasing protein provision while limiting agricultural N pressure remains a major sustainability challenge. Here, we analyzed changes in N use, cropland N surplus and protein supply across 130 countries from 1992 to 2022 to assess whether recurrent N-transition patterns emerge during agricultural and economic development. Countries followed divergent trajectories rather than converging toward a common N transition. Absolute decoupling, with increasing protein supply and declining cropland N surplus, occurred in 35.4% of countries, while others showed relative improvements or increasing N pressure. Cropland N surplus rose more steeply as agricultural N inputs intensified. Long-term trajectories revealed contrasting forms of N-system reorganization, from persistently lower-pressure systems to intensifying systems. Absolute decoupling occurred across diverse economic contexts and was not systematically associated with development level. Higher-development countries that decoupled generally reduced N surplus from higher starting levels but still ended with higher surpluses. Thus, increasing protein provision while redu
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1. 人话版
Reactive nitrogen (N) inputs underpin global food production, but increasing protein provision while limiting agricultural N pressure remains a major sustainability challenge.
Here, we analyzed changes in N use, cropland N surplus and protein supply across 130 countries from 1992 to 2022 to assess whether recurrent N-transition patterns emerge during agricultural and economic development.
2. 领域脉络
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3. 机制拆解
Countries followed divergent trajectories rather than converging toward a common N transition.
Cropland N surplus rose more steeply as agricultural N inputs intensified.
4. 证据与数字
Absolute decoupling, with increasing protein supply and declining cropland N surplus, occurred in 35.4% of countries, while others showed relative improvements or increasing N pressure.
5. 反例与边界
Higher-development countries that decoupled generally reduced N surplus from higher starting levels but still ended with higher surpluses.
6. 跨领域连接与意外收获
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