9Hans Hurni.Assessing sustainable land management(SLM)[J].Agriculture Ecosystems and Environment,2000,81(2):83-92. 被引量:1
10Bekele Shiferaw,Stein T.Holden.Policy instruments for sustainable land management:the case of highland smallholders in Ethiopia[J].Agricultural Economics,2000,22(3):217-232. 被引量:1