自发地理信息研究综述*

为了解当前自发地理信息的发展现状、存在问题和发展前景，对自发地理信息展开了研究。首先，介绍了自发地理信息的概念及其研究背景。然后，归纳统计了目前相关的研究文献，分析了自发地理信息的研究现状及其研究中亟待解决的难题。接着，根据研究侧重点的不同，将当前的自发地理信息研究领域总结为数据获取、数据处理和数据应用三个方面，并分别探讨各方面的研究现状、研究成果以及不足。最后，结合大数据研究背景，展望了自发地理信息的未来研究方向。研究表明，自发地理信息已成为地理信息的一个重要发展方向，但其数据处理、应用的理论和方法仍有待完善。

Review of Volunteered Geographic Information

To find out the present situation, problems and future development of Volunteered geographic information (VGI), this paper studied it carefully. Firstly, this paper introduced the concept of volunteered geographic information and the research background. Then, through the current related articles, this paper summarized and analyzed the research status and the urgent problems of volunteered geographic information. In addition, according to the focuses of VGI, this paper divided current researches into three aspects, which were data acquisition of VGI, data processing and data applications. Besides, this paper still grouping explored the research status, achievements and the insufficient of VGI in this article. Finally, combined with the big data research, this paper prospected the future research directions of volunteered geographic information. The result of our research shows that VGI has become an important branch of GIS, but the theory and methods of VGI data processing and application are still needed to be improved.