Global virtual-land flow and saving through international cereal trade

IMR OpenIR

	Global virtual-land flow and saving through international cereal trade
其他题名	Global virtual-land flow and saving through international cereal trade
	Zhang Jingqi 1; Zhao Naizhuo 2; Liu Xingjian 3; Liu Ying 2
	2016
发表期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
卷号	26 期号:5 页码:619-639
摘要	With 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.
其他摘要	With 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.
关键词	AGRICULTURAL TRADE WATER FOOTPRINTS CONSUMPTION PRODUCTS NATIONS virtual land land saving land flow international cereal trade
收录类别	CSCD
语种	英语
资助项目	[National Social Science Foundation of China]
CSCD记录号	CSCD:5669853
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/150651
专题	中国科学院金属研究所
作者单位	1.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
推荐引用方式 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.