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Global virtual-land flow and saving through international cereal trade
Alternative TitleGlobal virtual-land flow and saving through international cereal trade
Zhang Jingqi1; Zhao Naizhuo2; Liu Xingjian3; Liu Ying2
2016
Source PublicationJOURNAL OF GEOGRAPHICAL SCIENCES
ISSN1009-637X
Volume26Issue:5Pages:619-639
AbstractWith intense urbanization and sustained population growth, securing food production with limited land sources has increasingly become a pressing issue. Based on an analysis of international cereal (i.e., barley, buckwheat, maize, oats, rice, rye, sorghum, soybean, and wheat) trade and differences in yields of the cereal between export and import countries over the period of 2007 to 2011, we explore the great potential of land saving through the international cereal trade. By 'land saving', we refer to the reduced global total of lands required to produce a necessary amount of cereal when cereal is exported from a country with relatively large yield of the cereal to a country with relatively small yield of the cereal. Our scenario analysis suggests that international cereal trade would help mitigate the shortage of domestic arable land for many island countries (e.g., Japan) and countries in the arid Middle East and North Africa (e.g., Syria and Morocco). Furthermore, international cereal trade has the potential to generate 'land saving' of 50,092,284 ha of land per year, which is roughly the size of Spain. Drawing upon the definition of a similar concept-virtual water (Hoekstra and Hung 2002), we define virtual land as the area of land resources used for the production of goods. Through introducing the concept of virtual land, we believe land resources that are traditionally considered as stationary resources can flow with anthropogenic socioeconomic activities. The largest virtual-land flows (> 3,000,000 ha/year) exist between the United States (US) to China, Brazil to China, the US to Japan, the US to Mexico, and Argentina to China. However, not all virtual-land flows necessarily result in land saving. Thus, more endeavors are needed to plan the virtual-land flows for a larger land saving at the global scale.
Other AbstractWith intense urbanization and sustained population growth, securing food production with limited land sources has increasingly become a pressing issue. Based on an analysis of international cereal (i.e., barley, buckwheat, maize, oats, rice, rye, sorghum, soybean, and wheat) trade and differences in yields of the cereal between export and import countries over the period of 2007 to 2011, we explore the great potential of land saving through the international cereal trade. By ‘land saving’, we refer to the reduced global total of lands required to produce a necessary amount of cereal when cereal is exported from a country with relatively large yield of the cereal to a country with relatively small yield of the cereal. Our scenario analysis suggests that international cereal trade would help mitigate the shortage of domestic arable land for many island countries (e.g., Japan) and countries in the arid Middle East and North Africa (e.g., Syria and Morocco). Furthermore, international cereal trade has the potential to generate ‘land saving’ of 50,092,284 ha of land per year, which is roughly the size of Spain. Drawing upon the definition of a similar concept – virtual water (Hoekstra and Hung 2002), we define virtual land as the area of land resources used for the production of goods. Through introducing the concept of virtual land, we believe land resources that are traditionally considered as stationary resources can flow with anthropogenic socioeconomic activities. The largest virtual-land flows (> 3,000,000 ha/year) exist between the United States (US) to China, Brazil to China, the US to Japan, the US to Mexico, and Argentina to China. However, not all virtual-land flows necessarily result in land saving. Thus, more endeavors are needed to plan the virtual-land flows for a larger land saving at the global scale.
KeywordAGRICULTURAL TRADE WATER FOOTPRINTS CONSUMPTION PRODUCTS NATIONS virtual land land saving land flow international cereal trade
Indexed ByCSCD
Language英语
Funding Project[National Social Science Foundation of China]
CSCD IDCSCD:5669853
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/150651
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.德克萨斯理工大学
3.University Hong Kong, Dept Urban Planning & Design, Hong Kong, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Zhang Jingqi,Zhao Naizhuo,Liu Xingjian,et al. Global virtual-land flow and saving through international cereal trade[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2016,26(5):619-639.
APA Zhang Jingqi,Zhao Naizhuo,Liu Xingjian,&Liu Ying.(2016).Global virtual-land flow and saving through international cereal trade.JOURNAL OF GEOGRAPHICAL SCIENCES,26(5),619-639.
MLA Zhang Jingqi,et al."Global virtual-land flow and saving through international cereal trade".JOURNAL OF GEOGRAPHICAL SCIENCES 26.5(2016):619-639.
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