Analysis and Research of uncertain radius in constructing geo - Spatial buffer

Abstract

Buffer analysis is one of the most important functions in GIS spatial analysis, which is used to establish the scope of influence around spatial entities. The conventional buffer radius is fixed. However, in practical situations, the buffer radius should be dynamically adjusted by considering the specific environment of the space entity such as nature and socio-economy condition. Therefore it is able to achieve accurate and scientific spatial analysis, which aims to provide efficient decision-making services and intellectual support for the construction of the social economy and the ecological civilization. In this paper, based on analysis of the shortcomings of conventional buffer, several special buffers are discussed and the uncertain buffer radius is calculated under different conditions. Finally, an example is harnessed to illustrate the existence of uncertain buffer radius.