Abstract:

Study on ecological land in rapidly urbanized and industrialized region not only needs attention to the effects of environmental pollution and ecoenvironment degradation,but should emphasize on its regulation and amelioration function upon regional environment.As one of the most important cities in the Yangtze River Delta,protection of ecological land is of great significance to maintain its local environment characteristic famous for “Landscape city”.Firstly,this paper calculated the ecological land area by exploring the methods of TM remote sensing and spatial analysis, which reveals that ecological land of Nanjing City takes 15% of its total land areas.Secondly,based on the suitability and similarity of its function,the ecological land was divided into four patterns:Water source reserve,wetlands of rivers and lakes,famous scenic site and geological heritage,first two of which has relatively more intensive spatial advantages.Thirdly,we quantitatively investigated the importance of environmental function by choosing 12 most representative indications.According to the evaluation,the ecological land areas were partitioned into three levels:The most important area,relative important area and important area,taking 19%，56% and 25% of the total ecological land area respectively.Finally,four ecoenvironmental regulation groups including 11 environmental pollution sources were built,considering not merely environmental regulation function of ecological land for urbanization and industrialization, but coordination between pollution governance and ecology protection. Regulation policies such as prohibition or limitation of human activities and ecoenvironment protection were also suggested correspondingly