... University, Yangling, Shaanxi Province, 712100, PR China. 2 Research Center for Recycling Agricultural Engineering Technology of Shaanxi Province, Yangling, Shaanxi Province, 712100, PR China. 3 ... resources in China. Beijing: University of People’s of China Press; 1993 [in Chinese]. [7] H. B. Xu. The Principle of Analytic Hierarchy Process.Tianjin: Tianjin University Press;1986 [in Chinese]. ... manures is estimated using the number of animals and the annual dry excrement production of one animal [13]. Manure resources in China in 2006 are included in Table 4 [14]. Data in Table 4 indicates...