1WECD.Our Common Future[M].Oxford University Press,Oxford.1987.
2Daily,Gretchen.C.,1997.Introduction:what are ecosystem services?In:Nature's Services.Island Press.Washington,D.C.
3Odum,H.T.,1989,Ecological Engineering and Self-Organization,In Ecological Engineering An Introduction to Ecotechnology,W.J.Mitsch and S.E.Jorgensen.New York:John Wiley&Sons.
5Fry,G..and I.Sarl?v-Herlin,1997.The ecological and amenity func tions of woodland edges in the agricultural landscape:basis for design andmanagement.Landscape and Urban Plann.47:45-55.
6Wilson,O.Edward.1992.The Diversity of Life.The Belknap Press of Harvard University Press,Cambridge,MA.
7]Sim van der Ryn and Cowan,Stuart,1996.Ecological Design,Island Press Washington.D.C.[27]Thayer,Jr.R.1989.The experience of sus tainable landscapes.Landscape Journal,Fall.
