The Applied Research Of Landuse Change With CA-MARKOV Model By DEM Amendment

Study on dynamic change of land use is mainly aimed at doing research on Changes of land-use types,and the effects of Natural driving force and human activities on Changes in land ecosystems.It is an important aspect of Contemporary International Earth Science, especially the field of the surface area of Earth System.As a result,it is very important to strengthen the research on land use resources in terms of quantity and quality changes, which can protect the region's sustained economic development and ensure the survival of the environmental conditions of human security.In the current period of rapid urbanization in China,the changes of land use is frequent and severe abnormal,but with the development of GIS technology,the continuous improvement of spatial analysis function and model of continuous improvement in computing speed,it makes us demand for the changes of the complexity of land-use system,and it provides a convenient skill technology to predict the land use in the future.In this paper,I take full advantage of GIS technology,select the land use database of Jiangbei District in Chongqing Municipality in 2000 and 2007,which is the Core data,and combine that with DEM data to analyze the current land use,the number of land-use change, and the relationship between land use and Slope factor,while predicting the situation of land use in the future of a time by using Markov Model.On this basis,I can revise the conversion probability of land use which is caused by slope factor,getting the transition probability distribution of different kinds of land.Finally,use CA Model to consider 2007 as the starting year and transition probability matrix and around the kind of transition probability distribution as a model of Proterozoic CA cell a state of transformation rules in order to get the result of land use in Jiangbei district on the volume and space.This paper is mainly divided into four parts:The first part is introduction,which introduces the background and Significance of the research of land use and some of the foreign researches on this.Meanwhile,it set forth the content,method,technology Roadmap,relating theory,and the model of this paper.The second part is the summarize of the relating basic theory.It makes a brief introduction on Land System TheoryDigital elevation model(DEM) theory,Cellular Automata theory,and Markov theory referred in this paper.The next part is Changes analysis and prediction of some practical examples.Of land use of study area in 2000 and 2007,we need to arrange the data of the study area,and then,overlay the slope data abstracted from the DEM Model and the data of current land use to find the interrelationship between different land types and slope factor. In the end,we can compare and analyze the two period data of land use to get the amount changes of land use and the changes of different types.The last part is Simulation of land use.We can get Markov transition probability matrix of the type of changes in land according to the data of land use change.And at last we can get transition probability distribution of kinds of land use based on slope factor while combining slope factor to do spatial analysis.If we use that transition probability of different land type to be the change rule of CA Model,and consider 2007 as the starting year,we can get the map of land use in next period,that is Characteristics of the spatial distribution in 2014.