1. Center for Chinese Agricultural Policy; Institute of Geographic Sciences and Natural Resources Research; Chinese Academy of Sciences; Jia 11, Datun Road, Anwai Beijing 100101
2. Dep. of Financial & Management Studies, SOAS; Univ. of London; London WC1H 0GX UK
3. Centre for World Food Studies; Free Univ.; De Boelelaan 1105 1081 HV Amsterdam the Netherlands
4. Food Security and the Environment Program; Stanford Univ.; Stanford CA 95305
5. International Institute for Applied Systems Analysis; Schlossplatz 1 A-2361 Laxenburg Austria