8ZHANG Xiu-wu, YANG Lin-sheng, LI Yong-hua, et al. Estimation of lead and zinc emissions from mineral exploitation based oncharacteristics of lead/zinc deposits inChina[J]. ScienceDirect, 2011: 2513-2519.
9Atmi ,E.Gi.in en ,H. B.Lise,B.B.and Lise,W.Factors affecting forest cooperative-s participation in forestry in Turkey .Forest Policy and Economics,2009,11(2):102 - 108.
10McEvoya,DJonesb,M.McKeea,M.and TalberthcJ.Incentivizing cooper- ative agreements for sustainable forest management: Experimental tests of alternative structures and institutional rules .Forest Policy and Economics,2014(44):34 - 41.