A Study on Optimizing the Urban Land Use and Landscape Pattern Based on GIS——Taking Zhanjiang City as Illustration

Based on the sources of Remote Sensing (RS) images of Zhanjiang City in 2000, and by using the function of dealing with images and data of Geographic Information System (GIS), this paper produces the patches of landscape types and presents such characteristics of the patches as quantities,perimeters,and areas etc. Then, the present situation,temporal and spatial patterns of urban landscape ecology were elaborated by calculating and analyzing the landscape indexes.Results showed that the area proportiond of habitat landscape,industrial landscape, green-land landscape and waters landscape were 29.57%, 15.423%, 14.501% and 5.98% in 2000,respectively.Also the number of patches and diversity indexes of habitatlandscape were the highest,while the fragmentation indexes of green-land landscape were the lowest in all landscape types. Finally, this paper puts forward the countermeasures to optimize the spatial pattern of urban landscape ecology .