1. Balzhiser, R., 1998. The Chinese Energy Outlook. The Bridge, pp. 24–30.
2. Brown, L.R., 1995. Who Will Feed China? Wake-up Call for a Small Planet. W.W. Norton, New York.
3. Land-use change in a small catchment of northern Loess plateau, China;Chen;Agric. Ecosyst. Environ.,2001
4. Sustainable agriculture development in China;Cheng;World Develop.,1992
5. Greenhouse gas mitigation strategies: preliminary results from the US Country studies program;Dixon;AMBIO,1996