第三次全国国土调查工作图斑地类常见认定问题分析

Map signs of land type analysis of common identification problems in the third national land survey

第三次全国国土调查已于2019年全面开展,图斑地类认定是该项工作的重点和难点。本文根据笔者所在单位在华南地区多个项目的实施经验,针对动土、建设用地和闲置用地3类重点图斑中常见的容易判断错误的问题,通过影像图、现场照片对比及国家发布的认定依据进行分析,总结了一套地类认定的规律和经验,有助于三调工作中快速、准确地认定地类,避免了返工和数据库的反复修改,从而可提高作业队伍在三调工作中的工作效率和工作质量。

The third national land survey in 2019,has been fully developed,and the map signs of land type is the emphasis and difficulty in the work. Based on our experience in the implementation of the multiple projects in the south of China,this paper has developed a set of rules and experience of land category identification aiming to solve the problems with wrong judgment easy to make in the work of the three map signs of land type. They are soil moving,construction land and idle land,according to the analysis results from the comparison of images,scene photos and the basis of asserting releasing by country. It helps people to make the class identification quickly and accurately in the third national land survey,avoiding rework and revising of the database,so as to improve the work efficiency of the operation team and the quality of our work in the third national land survey.