三维地籍产权体的定义与表达

传统意义上的地籍是以宗地作为基本单元进行权属登记和管理,以地表权利为核心的二维地籍。而三维地籍同样需要一种类似于二维宗地的基本单元来登记和管理三维空间中的权属状况,这种三维基本单元被称为产权体。本文以土地和房产等权利实体为基础,以权利空间为参考,研究三维空间中土地和房产的划分方式,分析这两种基本单元的存在形式、划分方式和空间形态,概括出它们的本质特征。以这些本质特征为基础,给出产权体定义和表达方式,并验证了所定义产权体的正确性和有效性。

Definition and Representation of Property Volume of Three Dimensional Cadastre

Cadastre is a tool which is used to manage national land resources and assets.Traditional cadastre is two-dimensional one which takes parcel as basic management unit to administer land surface right,and its theoretical basis is consistency of the right nationality of the same parcel in the vertical direction,namely the ownership rights of underground,surface and ground space belong to the identical obligee.Due to the backwardness of the past economic development,land use mainly concentrated on the two-dimensional surface and it isn＇t necessary to extend land use into the third dimension.Therefore,traditional two-dimensional cadastre which takes surface right as core can satisfy social demands well.In recent decades,the rapid increase in population and intensified urbanization make the land use of urban areas,especially business centers under rising pressures.In order to provide more available space,city development extends unceasingly to the third dimension.Three-dimensional land use makes the subject of property become pluralism in the vertical direction,namely underground,surface and ground space can be stratified development and are distributed to different obligees.Tendency of Three-dimensional land use brings forth challenges to traditional land management theories and methods.Three-dimensional cadastre also needs a kind of basic unit like two-dimensional land parcel to register and manage property in three-dimensional space,this kind of three-dimensional basic unit is called property volume in this paper.We will take right entities such as land and property as basis,use right space as reference,research dividing mode of land and property in three-dimensional space,analyze existing form,dividing mode and space form of two kinds of basic unit,generalize theirs basic characteristic.Based on these substantive characteristics,we give the definition and representation of property volume,and test the correctness and validity of the given property volume.