干旱区生态环境知识资源中心(Arid): Global virtual-land flow and saving through international cereal trade

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	Global virtual-land flow and saving through international cereal trade
	Zhang Jingqi; Zhao Naizhuo; Liu Xingjian; Liu Ying
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2016
卷号	26 期号:5 页码:619-639
英文摘要	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.
英文关键词	virtual land land saving land flow international cereal trade
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5669853
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335627
作者单位	Zhang Jingqi, School of Humanity and Law, Northeast University, Shenyang, Liaoning 110169, China.; Zhao Naizhuo, Department of Geosciences, Texas Tech University, Lubbock, 79409, USA.; Liu Ying, Department of Geosciences, Texas Tech University, Lubbock, 79409, USA.; Liu Xingjian, Department of Urban Planning and Design, University of Hong Kong, Hong Kong.
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],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.