Research On Models Of Land Use Change Based On The Integration Of GIS And Geo-CA

The study on land use and land cover change (LUCC) is a hotspot and frontier issue in the global change research fields at present. LUCC model is an important means to understand the complication of land use and land cover change in depth, and its functions can be summarized to describe, explain, predict and make the countermeasure to land use and land change. The complexity of land use and change determines land use research must take the theory and method of the complex systems, especially set up mathematics models based on the complex systems thoughts, which is an important field to land use course studies. Under the background of the complex systems theory in the world at present, it is the frontier area of geographic modeling that using Geographic Cellular Automata model to simulate geographic space-time course.From the point of model view, Geo-CA model is one kind of dynamic model on the basis of micro- individual's interactive. Cells' shape is similar to the shape of raster data of GIS, so it can be integrated with GIS. On the one hand it can strengthen the dynamic modeling ability of GIS software, on the other hand, the strong spatial processing ability of GIS give the support to Geo-CA model data preparation, data procession and model results dynamic display. Integration of GIS and Geo-CA can make up complementary advantages and dynamic system, and realize dynamic simulation to the course of land use and land change.The Aksu River is one of the international rivers of Sinkiang, and the Aksu Valley has been one of the most important rural areas of the north of the Tarim Basin, because its farming exploiture is earlier, resource is abundant, and natural condition is beautiful. In recent years with the development of economy, the increasing of population, the desertification trend of the Aksu River Valley is more serious, and ecological environment is threatened. Through setting up the valley land use dynamic model, can not only merely offer the decision basis for the valley rational land use and distribution of water resource, but also give the important support for life and production, ecological environment, and economic coordinated development of the River Valley residents at...