Reaearch On Optimization Of Land Use Structure And Spatial Layout Based On Grey Linear Programming And CA-Markov

Sustainable use of land is one of the fundamental problems of social sustainable development, Optimize the allocation of land use structure and spatial layout is an important way of sustainable land use. In recent years, increasing land use conflicts, Land use/cover change (LUCC) become a hot research and core issues in recent years. At present, the full implementation of the planning round, has entered a period of adjustment, a new round of planning will also be launched in a few years, it’s with theoretical and practical significance for the optimization of land use can be summed up in the past land-use characteristics, and predict future land use conditions, and improvement of land use structure and layout, with some reference to adjust the overall plan for land use and implementation. In this paper, the problem of land use discussion launched a comprehensive study, application of gray linear programming and CA-Markov model combination.In this paper, a typical mountain counties-Yun County as the research object, A comprehensive analysis of the status of the study area and land use change2006to2009by Landscape indices, land utilization, land reclamation rate, change the dynamic of the, noted Yun County land use characteristics and problems, Respectively, using gray linear programming model and CA-Markov model was optimized its structure and spatial layout, After the status of land use Yun County has a comprehensive and objective understanding.In this paper, the general linear programming model by adding a gray element, this article predicted the population, output parameters required by the model of gray prediction methods, then set the cultivated land, garden, woodland, other agricultural land, urban land, rural residential land, mining land use, land transportation, water conservancy facilities, land, water and other land these11variables, set11constraints and the objective function corresponding, LINDO software successfully predicted by2018the number of Yun County Land Use Structure, and take the accuracy of the test and detailed analysis of changes, the results show that the gray linear programming capable of Yun County land use quantity structure for effective forecasting.First, the basic data processing including data formats, as well as a summary of land use in the class of basic error vector data before the use of CA-Markov model space layout optimization. Second, the use of Markov method to generate2006to2009land use state transition probability matrix, provide control of the number of spatial layout optimization. Then classified summary analysis of its impact driving force, provide basic data for land suitability atlas, and successfully conducted the spatial layout simulation by IDRISI software after completion of the model running conditions for preparing. Finally analysis of simulation results, meanwhile take comparative study with the results of gray linear programming, master planning results, the results showed that CA-Markov model simulation results more in line with the requirements of the actual development of Yun County.The gray linear programming model and CA-Markov model can conduct a comprehensive study on the number of structural and spatial layout of the study area, provide a reference for land use structure adjustment, adjustment and implementation of the master plan for the Yun County.