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Impacts of global trade on cropland soil-phosphorus depletion and food security

文献类型： 外文期刊

作者： Niu, Kunyu 1 ; Li, Mengyu 2 ; Lenzen, Manfred 2 ; Wiedmann, Thomas 5 ; Han, Xudong 6 ; Jin, Shuqin 7 ; Malik, Arunima 2 ; Gu, Baojing 10 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Econ & Dev, Beijing, Peoples R China

2.Univ Sydney, Sch Phys A28, ISA, Sydney, NSW, Australia

3.Int Inst Appl Syst Anal IIASA, Biodivers & Nat Resources BNR Program, Laxenburg, Austria

4.Hanse Wissenschaftskolleg, Delmenhorst, Germany

5.UNSW, Sch Civil & Environm Engn, Sustainabil Assessment Program, Sydney, NSW, Australia

6.UNSW, Water Res Ctr, Sch Civil & Environm Engn, Sydney, NSW, Australia

7.Minist Agr & Rural Affairs China, Res Ctr Rural Econ, Beijing, Peoples R China

8.Univ Sydney, Business Sch, Discipline Accounting, Sydney, NSW, Australia

9.Univ Sydney, Sydney Nano Inst, Sydney, NSW, Australia

10.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou, Peoples R China

11.Zhejiang Univ, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou, Peoples R China

期刊名称：NATURE SUSTAINABILITY （ 影响因子：25.7； 五年影响因子：29.9 ）

ISSN： 2398-9629

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Globalization intensifies the demand for agricultural products from specific regions, resulting in intensive farming practices that can exacerbate local cropland soil phosphorus (P) depletion, thereby undermining long-term food security. By integrating global data on international trade and soil-P reserves and deficits from 1970 to 2017, we demonstrate that the contribution of trade to global soil-P deficits increased from 7% in 1970 to 18% in 2017, with 54% of this impact driven by non-food consumption. Over these 48 years, developing regions exported a net of 5.8 Mt P through agricultural trade, resulting in a net increase of 13 Mt soil-P deficits. These deficits are primarily concentrated in regions with low soil-P reserves, such as sub-Saharan Africa, Latin America and Southeast Asia, thereby heightening the risks of soil-P depletion in these areas and amplifying long-term concerns about food security. This insight underscores the imperative for a broader perspective on food security-prioritizing national soil productivity rather than merely boosting the availability of food in the global market when shaping global trade policies. The growing global demand for agricultural products from specific regions leads to farming practices that can exacerbate soil-phosphorus depletion, with consequences for long-term food security. This study quantifies the contribution of trade to global soil-phosphorus deficits from 1970 to 2017.

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