1. 2010. Outline of the Comprehensive Management Plan of the Loess Plateau (2010-2030), in: Commission, N.D.a.R., Resources, M.o.W., Agriculture, M.o., Bureau, S.F. (Eds.). The Central People's Government of the People's Republic of China.
2. The Greening of Industrial Ecosystems;Allenby,1994
3. Borgatti, S.P., 2009. Network analysis in the social sciences ence 324, 465-465.
4. Bringezu, S., Schütz, H., 2001. Material use indicators for the European Union, 1980-1997: economy-wide material flow accounts and balances and derived ndicators of resource use, Working documents / European Commission. Office for Official Publications of the Europ. Communities, Luxembourg.
5. Bureau, H.S., 2006-2017a. Henan Statistical Yearbook 2006-2017. China Statistic Press.