Temporal And Spatial Features Of Urban And Construction Land In Chengdu City, China

Based on grid percentage land cover data of 1988, 1995, 2000, 2005, and 2010, the spatial and temporal variation of urban and construction land in Chengdu City was analyzed using spatial analysis and statistical techniques based on ArcGIS, excel and other software. The results showed that: In 2010, the urban and construction land area reached 1841.98 km2, and mainly distributed in the central area of Chengdu City. During 1988-2010, the urban and construction land in Chengdu showed increasing trend, with the largest increase occurring during 2005-2010. After 2000, the city entered a period of rapid expansion, and the turnin area increased significantly. The turn-out area was largest during 1988-1995, benefiting from land consolidation and transformation at this stage. Magnitude of the changes in urban and construction land showed increase trend during 1988-2010, especially after 2000. In the future, it is suggested to speed up the development in surrounding counties (districts) and to rationalize the allocation of urban land use. In central urban areas, refined planning and transformation should be paid more attention to meet the needs of future urban development.