Li Xiaoyun, Qi Gubo, Tang Lixia, Zhao Lixia, Jin Leshan, Guo Zhanfeng and Wu Jin are at the College of Humanities and Development, China Agricultural University, Beijing, China.James Keeley is a Research Associate with the International Institute for Environment and Development (IIED), London, UK, and co-author of 'Understanding Environmental Policy Processes: Cases from Africa' (Earthscan, 2003).