GAI Shouqi    School of Philosophy

Abstract: Since twentieth Century, with the progress of modern science and technology and the development of the social productivity, accelerating the process of human civilization,at the same time, the human beings are faced with serious challenges about a series of major problems. The problems of population growth, excessive consumption of resources, climate changing ,environmental pollution and ecological damage threaten the development of people. In view of the increasingly serious problems, many knowledge people conduct a thorough reflection on the various aspects of humans. Western environmental ethicists tried to set up a brand-new ethics and value system from the criticism of traditional ethical concept and viewpoint of value, in order to completely solve the ecological predicament that the mankind faces at present. They started from different environmental resources, thinking over the position of the relationship between man and nature. Which enjoys the father of environmental ethics of western environmental ethicists Holmes Rawls thought is particularly prominent. Holmes Rolstonis the most famous contemporary non anthropocentric environmental ethics, natural value theory is the core of environmental ethics. Rolston believes that the objective values in the nature based on the moral obligation. In this paper, taking the theory of natural value as the center of the Rawls Dayton environmental ethics researching, the theoretical background of the first chapter mainly discusses the nature value theory of Science.philosophy background, and in detail introduced the development of the western environmental ethics, the process of Rolston thought in the development of the environmental ethics, in order to expand the field of vision, better analysis of the source of his thought. The second chapter focuses on the discussion and analysis the main idea sand characteristics of Rawls Dayton nature value theory. From the point of view of "value", taking “ value” as the foundation of environmental ethics, and then on the basis of environmental ethics to construct the theory of natural value system, and pointing out that the most important feature of value is its analysis about fourteen kinds of value. Then dividing the analysis of Rolston's natural value into the concept of instrumental value. intrinsic value and system value ". Finally elaborating the application about theory of natural value in reality: the application in public policy, in the enterprise and the personal moral beliefs. In the third chapter, Rolston's ideas are analyzed and summed up contributing the environmental ethics and its influence to contemporary significance.

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