Abstract:Ecological land is one of the most important components of urban Social-Economic-Natural Complex Ecosystem, it can provide various important ecosystem services for urban areas. Using Remote Sensing, Geography Information Science technology and landscape index analysis software, focusing on the scientific problem of urban ecological land and ecosystem services, on the basis of analyzing four-phase remote sensing images of Changzhou in 1991, 1996, 2001 and 2006, we got the evolution of landscape spatial structure of Changzhou during the past 15 years and assessed changes of ecosystem services generated by urban ecological land. The results show that the ecological land proportion of land-use decreased from 89.2% to 65.1%. During 1991 to 2001, the areas of forests, fields and water had a decreasing tendency. During 2001 to 2006, the areas of forests turned back to that of 1996. Ecological land in Changzhou have provided ecosystem services including agricultural and forestry production, climatic regulation, conservation of water resource, soil and water conservation, biodiversity protection, etc. During 1991 to 2006, the value of ecosystem services provided by ecological land has reduced 19.3%. The decrease of ecosystem services value provided by agricultural lands was the largest of all and it decreased 32.3%. The results showed strong correlation between landscape spatial structure and ecosystem services of Changzhou city. This paper can provide scientific methods and decision making for strengthening of urban ecosystem services, land use planning and management, urban sustainable development, etc.