7Colby, Hunter, Xinshen Diao, and Francis Tuan, "China's WTO Ac- cession: Coriflicts with Domestic Agricultural Policies and Institu- tions,"TMD Discussion Paper,No. 68,Trade and Macroeconomics Division, International Food Policy Research Institute, Washington, D.C. ,February 2001.
4Brown,Lester R.:"Who Will Feed China? Wake-up call for a Small Planet",New York:W.W.Norton & Company,1995.
5Leisinger K.M.,Schmitt K.and Pandya-Lorch R.:"Six billion and counting:Population and food security in the 21st century",Food Policy Statements,International Food Policy Research lnstitute,Washington D.C.,USA,2002,2p.
6RosegrantM.W.,Paisner M.S.,Meijer S.and Witcover J.:"Global Food projections to 2020",International.Food Policy Research lnstitute,Washington D.C.,USA,2001,206p.
7Smith L.,Obeid A.,Jensen H.:"The geography and causes of food insecurity in developing countries",Agricultural Economics,2000,Vol.22.