【摘要】 研究目的:基于城市边缘区居住用地的演替过程定量分析其空间分异性状,并基于此构建相应的改造模式。研究方法:信息熵模型分析。研究结果:城市边缘区居住用地的空间分异可以通过信息熵进行度量,基于度量结果,可以将其分为4种类型。根据各类型的特点分别设计相应的模式对其进行改造,以达成土地高效、合理以及可持续利用的目标。研究结论:居住用地的发展趋向是在时间函数作用下不断增加着熵值,通过外界能量的输入即居住用地改造可改善土地利用状态,改造措施必须有一定的可行性、较低的费效比和一定的侧重点。更多还原

【Abstract】 Based on the analysis of evolving process of the land use form in urban fringes,the paper aims to quantitatively analyze the characteristic of spatial heterogeneity of residential land using and to establish corresponding patterns to readjust the residential land use form.Analysis method of information entropy was employed in this paper.The result shows that:1)The system of residential land use in urban fringes is a complicated and macro system with dissipative structure.With the development of society,economy and technology,the spatial form of urban regions is experiencing a process of transformation.2)At a certain period,the form of residential land use in urban fringes is a function with the variable of time and matrix layer of land use.3)The information entropy values are of guiding significance to the spatial form heterogeneity of the residential land in urban fringes as they can reflect the form of land use of different regions in a certain period of time.4)Taking use of the land use constitution data gathered from the sample residential areas in urban fringes of Beijing,this paper conducts analysis on the spatial form heterogeneity of residential land of Beijing and get its conclusion,5)The natural evolving trend of residential land in urban fringes is a process with ever-increasing entropy under the self-organization mechanism.It should take corresponding readjustment mode to make the land use system achieve low entropy transmuting in accordance with the certain types of residential land.The conclusion is that the land use form of urban fringes shows complexity and diversity due to the dual influence of urban and rural forces.The heterogeneity can be evaluated by information entropy values of different residential land use.The evolving trend of residential land is no doubt an ever-increasing entropy process.Thereby,it will reduce the efficiency of land use.It should take effective measures to prompt the evolvement of residential land use form to evolve ideally,so as to solve contradictions among popularization,resources,environment and ecological crisis and the contradictions between industrial reproduction and land reutilization,prompt urban fringe to be developed rapidly,orderly and harmoniously.Different types of residential land use have different formation process and orientation of evolution,so in accordance with the certain types of residential land use,it should take corresponding readjustment mode to make the land use system achieve low entropy transmuting.Therefore,in determining transformation measure,there must be a certain degree of focus.The tricky and significant problems are solved based on the focuses.更多还原