Supported by the Major Project of the National Social Science Fundation(09&ZD047);the Special Fund for Research in the Public Interest of the Ministry of Land and Resources of China(201211028);the Twelfth Five Year Plan of the National Key Technology R&D Program(2012BAB11B02)~~
As an explanation to economic cycle, political cycle theory has been widely used, and political factor has been gradual y recognized as an important fac-tor in influencing economy but not simply exteranl factors. Howe...