GIS中模糊区域的形式化描述方法探讨

连续区域是环境科学、土壤科学等领域中广泛存在的一类地理实体。目前，在GIS中表达这类实体的空间数据不可避免地带有模糊性。为此，首先分析和总结了GIS空间目标数据获取的模式及其模糊来源；然后，基于模糊集合论探讨了模糊区域目标的内部结构组成，分析并指出了已有研究中存在的不足。最后，建立了模糊区域目标形式化描述的一般模型，提出了GSI图上模糊区域目标形式化描述的方法。

On Formalization Methods of Describing Fuzzy Region in GIS

Continuous region is a kind of most common entity in many fields such as environment science, land information science and so on. In current GIS databases, there is an inevitably error or fuzziness in spatial data of representing this kind of entity. Therefore, it is very important for the research on how to describe and represent the kind of entity. In this paper, we firstly analyze and summarize the modes of gathering spatial data and its sources of fuzziness. Then, the geometric structure of fuzzy region is discussed, and some shortcomings in existed researches are pointed out. Finally, a generalized model of describing fuzzy region is set up, and a new methods of formalization for fuzzy region in thematic map is presented.