Tang Zhipeng1, Fu Xue2 and William XiaojunWei3

1Institute of Geography Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2School of Business, Shanghai Normal University, Shanghai 200234, China
3MacEwan School of Business, Edmonton, AB T5J, Canada
1E-mail: tangzhipeng@amss.ac.cn, 2E-mail: fuxueshanghai@yahoo.com.cn,
3E-mail: weix@macewan.ca


The industrial wastewater is one of the main sources of water pollution in China. Identifying important coefficients in the sectors with highly discharged wastewater provides government the rule of reducing discharge from the point of industrial association. This paper develops the losing information method, and then determines the important coefficients in sectors of industrial wastewater in 2002 and 2005.

Keywords: National Economic Main System, National Economic Sub-System, Losing Information Method