Abstract:

This paper proposed the principles and procedures to establish the environmental indicator system for the construction of an ecological island by combining PressureStateResponse (PSR) model and System Analysis theory.There were 4 steps during the establishment of this indicator system：(1) Constructing a preliminary indicator system by literature review on related environmental systems of ecological areas (islands)；(2) First screening the indicators according to their logical relationships by PSR model；(3) Aimed at 2010 (shortterm target)，determining the core environmental impact factors by system analysis and second screening the indicators；(4) Aimed at 2030 (longterm target)，final screening indicators in order to establish a comprehensive and flexible environmental indicator system.These procedures have been applied in the case study of Chongming Island.The core environmental indicators are focused on water，air，and land three elements.The evaluation result of this indicator system reflects the overall environmental condition of Chongming is 72.Meanwhile the score of environmental pressure is 85，environmental quality is 80 and environmental protection is 51，which is compatible with reality of Chongming.Part of the research has already been applied in the construction of Chongming Island.

Key words: eco-island/environment/pressurestateresponse model/system analysis