Analysis on the role and endowment of virtual water in agricultural ecosystem

Abstract

Abstract: Water is one of the most important components of agricultural ecosystem,and also a source of food security,which plays an essential role in ensuring sustainable food resources for a growing population.In this study,the policy relevancy of virtual water was addressed,with food production,alternative trend of import,and product condition analyzed.The results showed that an average of 10.2?10⁹ m³ water and 27.7?10⁶ hm² land was transferred by imported wheat,while an average of 0.3?10⁹ m³ water and 1.6?10⁶ hm² land was transferred by imported maize.The sum of virtual water equivalent was 10.5?10⁹ m³.It's of significance to alleviate the pressure of water stress in agriculture and arable land,help to resolve water predication of food production by food imports,and compensate water endowment.

Key words: Agricultural water use, Compensation, Food trade, Water resource, Policy relevancy

CLC Number:

F304
X22

LIU Wenhua, DONG Rencai, DENG Hongbing . Analysis on the role and endowment of virtual water in agricultural ecosystem[J]. Chinese Journal of Applied Ecology, 2005, 16(11): 2108-2111.

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