Global trends of cropland phosphorus use and sustainability challenges
Global trends of cropland phosphorus use and sustainability challenges
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DOI：
10.1038/s41586-022-05220-z
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发表时间：
2022-10
期刊：
影响因子：
64.8
通讯作者：
T. Zou;X. Zhang;E. A. Davidson
中科院分区：
文献类型：
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作者：
T. Zou;X. Zhang;E. A. Davidson
为了满足日益增长的粮食需求，同时应对磷污染加剧和磷矿储量枯竭的多重挑战，需要提高作物生产中的磷利用效率（PUE，在特定系统中生产性磷输出与磷输入的比率）。虽然许多努力致力于改善农场的营养管理实践，但很少有研究在全国范围内研究PUE的历史轨迹及其社会经济和农艺驱动因素。在这里，我们提出了一个数据库的P预算（作物生产系统的输入和输出）和PUE的国家和作物类型的1961-2019年，并检查几个驱动因素的PUE的实质性贡献，如经济发展阶段和作物组合。为了应对磷管理的挑战，我们发现全球作物生产的PUE必须提高到68- 81%，最近的趋势表明在实现这一目标方面取得了一些有意义的进展。然而，各国农田中磷管理的挑战和机遇差异很大。
To meet the growing food demand while addressing the multiple challenges of exacerbating phosphorus (P) pollution and depleting P rock reserves, , , , , , , , , , , , , –, P use efficiency (PUE, the ratio of productive P output to P input in a defined system) in crop production needs to be improved. Although many efforts have been devoted to improving nutrient management practices on farms, few studies have examined the historical trajectories of PUE and their socioeconomic and agronomic drivers on a national scale,,,,,,. Here we present a database of the P budget (the input and output of the crop production system) and PUE by country and by crop type for 1961–2019, and examine the substantial contribution of several drivers for PUE, such as economic development stages and crop portfolios. To address the P management challenges, we found that global PUE in crop production must increase to 68–81%, and recent trends indicate some meaningful progress towards this goal. However, P management challenges and opportunities in croplands vary widely among countries.