PDA在土地利用变更调查中的应用

基于3S技术的土地利用动态监测与数据更新已在我国普遍展开，如何快速、便捷地实现土地变化信息的外业核查、勘测与土地数据库的更新是重要的技术关键。本文研究并提出一种基于PDA的外业调查与变更技术方法，能够在外业完成变化图斑的属性核查、数据采集与数据库更新等全部工作，实现了一体化作业，提高外业调查的工作效率，保证数据更新质量。

The Aipplication of PDA on Land Use Change Survey

Since 3S technology dynamic monitoring of land use and data updating has generally developed in China, it＇ s an important key technology to renovate the information of field investigation and update the land database. This paper puts forward a PDA-based survey of field investigation to complete attribute verification of changing graphic, data collection and database updating and so on to achieve the integration of operations, improve the efficiency of the field investigation and ensure the quality of updated data.