1. Fischer G, Chen YF, Sun LX. The balance of cultivated land in China during 1988–1995. Internat. Inst. Appl. Syst. Analysis (IIASA) Interim Report IR-98-047, Laxenburg, Austria, 1998. Available: http://webarchive.iiasa.ac.at/Publications/Documents/IR-98-047.pdf.
2. Statistical database of the food and agricultural organization of the United Nations. 2009. Database: FAOSTAT data [Internet]. Available: http://faostat.fao.org/.
3. Quantity changes of arable land in China and analysis of its reasons;SG Zhang;Chinese Journal of Agricultural Resources and Regional Planning,2005
4. Cultivated land resources and strategies for its sustainable utilization and protection in China;QG Zhao;Acta Pedologica Sinica,2006
5. Performance Evaluation on the Policies of Cultivated Land Protection in China from the Perspective of Quantity Protection;SK Tan;China population, resources and environment,2010