| China has witnessed fast urbanization growth in the recent decade. How to seek harmonious development between human and the Earth by the optimal land use/land cover change (lucc) pattern with the support of the land use/land cover change dynamic model and the favor of the deep understanding of the land use evolution process and mechanism in urbanization becomes an important aspect of the land use/land cover change research. On the base of the former achievements, by use of the advanced 3S technique, temporal-spatial characteristics of urban land use change and it's driving forces from 1991 to 2004 in Changsha were analyzed systematically and synthetically in this paper, with their results given below:(1) Accord with the feather of land use in Hunan province, the remote sensing image interpretation keys of five land use types (cultivated land, vegetation, construction land, water area, unused land) were established in the paper, which are the base of this study and can provide useful references to the research on lucc of other area in Hunan province.(2) An integrative land use classification method was used to classify remote sensing images into land use map of each time (1991,1998,2004).The kappa coefficient of each land use map was higher than 0.8, which can support the next progress land use change detection.(3) With the supporting of GIS technique, growth degree index and spatial analysis model were used to analyze the dynamic evolution of urban land use change in Changsha with different scales. The results indicated that from 1991 to 2004, great change about urban land use had taken place in Changsha: water area decreased from 4189.44ha to 3636.98ha, cultivated land decreased from 24014.69ha to 16486.94ha, vegetation decreased from 21111.25ha to 18290.25ha, construction land increased from 10932.50ha to 21645.08ha, unused land increased from 757.19ha to 945.81ha, and main directions of land use change were confirmed. Through comparing on urban land use change of two successive phases, i.e. from 1991 to 1998, 1998 to 2004, different about urban land use change between the two phases was found. (4) Based on the application of quantitative methods and fractal theory, diversity, dominance, fragmentation, isolation and fractal dimension were used to analyze the landscape mosaic structure of Changsha and results were given as follow. In overall terms, the research district is revealed with a relative high diversity figure as well as low values in the dominance and fragmentation indices, and few landscapes show strong dominance. The character of spatial pattern evolution of each main landscape, such as cultivated land,, vegetation and construction land, is different from the others.(5) Dynamic change of land use in Changsha was forecasted by use of Markov model. In the following 13 years, the area of construction land would constantly increase with lower speed as well as the area of other four land use types would further decreased at different speed. Then, the balance status of urban land use was discussed in this paper, that construction land would keep constantly increase to be the uppermost land use type in Changsha, occupying 59.10% of total acreage of the research district.(6) The statistic data of social economy related urban land use from Changsha in 13 years were analyzed in this paper and the driving factors in urban land use of research district were defined based on principal components analysis. Then, multiple linear regression analysis method was used to quantificationally describe the effect of the driving factors on land use change with the support of Spss.
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