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Importing food damages domestic environment: Evidence from global soybean trade

文献类型： 外文期刊

作者： Sun, Jing 1 ; Mooney, Harold 3 ; Wu, Wenbin 1 ; Tang, Huajun 1 ; Tong, Yuxin 4 ; Xu, Zhenci 2 ; Huang, Baorong 5 ; Cheng, 1 ;

作者机构： 1.Chinese Acad Agr Sci, Minist Agr, Key Lab Agr Remote Sensing, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

2.Michigan State Univ, Ctr Syst Integrat & Sustainabil, E Lansing, MI 48823 USA

3.Stanford Univ, Dept Biol, Stanford, CA 94305 USA

4.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resources, Harbin 150086, Heilongjiang, Peoples R China

5.Chinese Acad Sci, Inst Sci & Dev, Beijing 100190, Peoples R China

6.Hainan Normal Univ, Coll Geog & Environm Sci, Ha

关键词： agriculture; environment; nitrogen; Sustainable Development Goals; telecoupling

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.205； 五年影响因子：12.291 ）

ISSN： 0027-8424

年卷期： 2018 年 115 卷 21 期

页码：

收录情况： SCI

摘要： Protecting the environment and enhancing food security are among the world's Sustainable Development Goals and greatest challenges. International food trade is an important mechanism to enhance food security worldwide. Nonetheless, it is widely concluded that in international food trade importing countries gain environmental benefits, while exporting countries suffer environmental problems by using land and other resources to produce food for exports. Our study shows that international food trade can also lead to environmental pollution in importing countries. At the global level, our metaanalysis indicates that there was increased nitrogen (N) pollution after much farmland for domestically cultivated N-fixing soybeans in importing countries was converted to grow high N-demanding crops (wheat, corn, rice, and vegetables). The findings were further verified by an intensive study at the regional level in China, the largest soybean-importing country, where the conversion of soybean lands to corn fields and rice paddies has also led to N pollution. Our study provides a sharp contrast to the conventional wisdom that only exports contribute substantially to environmental woes. Our results suggest the need to evaluate environmental consequences of international trade of all other major goods and products in all importing countries, which have significant implications for fundamental rethinking in global policy-making and debates on environmental responsibilities among consumers, producers, and traders across the world.

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