5Farnworth N R,Akerele O,Bingel A S,Soejarto D D ,GuoZ G.Medicinal plants in therapy.Bulletin of the World Health Organization.1985,63:965~981.
6Principe P P.The economic significance of plants and their constituents as drugs.In Wagner H,Hikino H,Farnsworth N R(ed).Economic and Medicinal Plant Research.Vol.3.London:Academic Press.1989,1 ~17.
7Grifo F,Rosenthal J(ed).Biodiversity and Human Health.Washington DC:Island Press,1997
8Alexander S,Schneider S,Lagerquist K.Ecosystem services:interaction of climate and life.In Daily G(ed).Nature's Services:Societal Dependence on Natural Ecosystems.Washington D C:Island Press.1997,71~92.
9Salati E.The forest and the hydrological cycle.Dickinson R(ed).The Geophysiology of Amazonia.New York:John Wiley and Sons.1987,273-294.
10Hillel,D.Out of the Earth:Civilization and the Life of the Soil.New York; The Free Press,1991