1Ulrich Beck, Risikogesells chafe Auf dem Weg in eine andere Moderne. Frankfurt am Main: Suhrkamp Verlag. 1986, P.Ⅻ.
2Loost Van Loon, “Virtual Risks in an Age of Cybernetic Reproduction”, in (eds) Barbara Adam, Ulrich Beck, The Risk Society and Beyond, Critical Issues for Social Theory, London:SAGE Publications, 2000, P176.
3“1.2 Billion Live in Absolute Poverty”, Popline, May/June, 2000, P7.
4Paul R. Ehrich and Anne H. Ehrlich, Healing thePlanet, New York: Addison-Wesley, 1991,P7.
5Alison Byerly, “The Uses of Landscape: The Picturesque Aesthetic” ,in Cheryll Gloffehy and Hamid Fmmm, eds. The Ecocriticism Reader. The University of Georgia Press, 1996 P53.
6Aldo Leopold, A Sand County Almanac [ M ], Oxford University Press, 2001, P171.
