Primary studies on urban ecosystem health assessment

Using the theory and technique of ecosystem heath to study urban eco environment problem possesses rather good significance in theory and practice. This paper is emphasized to research the urban ecosystem health assessment approach, to suggest integrated assessment indexes system and to establish fuzzy assessment model, with Guangzhou as example and Beijing and Shanghai as reference cities, and the ecosystem health situation of these three cities was assessed comparatively to clear about their restriction factors, so as to provide credible background situation and research basis for urban ecological planning.