Study On Spatio-Temporal Structure Evolution Of Urban Land-use Based On GIS

Land-use and its spatio-temporal structure evolution is a fairly complex phenomenon and process. It is not only an expressiveness of spatial conception, but also a series of times evolution. It reveals inherent law of land-use and its spatio-temporal structure evolution by synthetically expressing and describing for complex geographic phenomena of land-use in space and time. Therefore, at present, it has been given rise to lay stress widely on international academic circles. A lot of research results about land-use spatio-temporal structure evolution have been obtained by setting up spatial mathematic models. But so far, it is very seldom to research evolution law of land-use spatio-temporal structure by applied spatial information analysis technology of GIS, truly combining land-use change with its spatio-temporal distribution, overall and systematically simulating current situation of land-use and evolution process of spatial pattern and historic change. This is the key contents of my Dr. Degree's Thesis.This paper is drawn into the conception of spatial image thinking and geographic landscape based on theories of urban land-use and GIS, RS spatial information technology, after defining the spatial implication of the urban land-use spatio-temporal structural evolution. It is possible to set up mathematic models of geographic spatial conception that is reappearing of the spatial image. This paper takes characteristic and difference of spatial structure of land-use in different period of times in the Haizhu District of Guangzhou City as an example to go deep into carrying out quantitative and qualitative research of the municipalities of the city, especially the urban marginal districts using GIS technology. In this way, we can research developing regularity and analyze the problems of spatio-temporal structural evolution appearing during the high-speed urbanization, specially, urban marginal districts of our country so that we can bring forward some countermeasures and suggestions to harmonize the urbanization and urban spatio-temporal structure evolution.The main research characteristic of the paper is based on basic theories of land-use conceptions of spatial image thinking and geographic landscape technology of GIS and RS spatial analysis and good data in the research district. The scientific, reasonable, accurate, efficient basic methods to research spatio-temporal structure evolution of the urban land-use are summarized. They are consist of some applications in emphasis on discussing the pretreatment and quality of spatial data, deviation analysis of spatio-temporal structure, calculating model of spatial analysis, the concrete application of spatial pattern analyses and spatial autocorrelationanalyses in the field of the research of urban land-use.The pretreatment and quality of spatial data mainly deals with the spatial data source of land use, the quality status of land-use data and the quality control of land-use data. The contents of spatial and attributive data are very varied and detailed as a result of diversify of urban land data source. However different spatial data products are produced by different units according to different data standards and productive procedures. It is very difficult to obtain consistency when data products describe spatial targets of spatial characteristic, time characteristic and thematic characteristic. The results inevitably create a lot of error such as spatial positions, object attributes, spatial logicalities and completions and so on. Hence, it is very important for spatial data to process and mix together and for their qualities to evaluate. These are the core and foundation of research of urban land-use changed.The deviation analysis of spatio-temporal structure is based on GIS overlay. At present, the method in common use to describe deviation of urban expansion in spatial structure makes use of comparative analysis to study difference of various classification of urban land-use in spatial position. Although this method can draw the outline of spatial st...