基本农田保护对国家的粮食安全和社会稳定具有特殊意义，及时准确地获取基本农田的动态变化信息是基本农田保护的重要一环。本文提出利用动态差分GPS技术和GIS技术对基本农田土地变化进行定量监测。首先通过动态差分GPS技术精确获取基本农田保护区内土地利用现状数据，然后利用GIS空间分析方法对土地利用变化的数量和方向进行分析。实践结果表明利用GPS和GIS集成技术可以高精度、高效率和低成本地对基本农田动态变化信息进行及时监测。%Basic farmland protection of the country's food security and social stability is of special significance . Quickly and accurate access to the dynamic changes of the basic farmland information is an important part of the basic farmland protection ,In this paper .the use of GPS-RTK and GIS technology for quantitative monitoring of basic farmland land changes ,First accurately obtain basic farmland protection areas of land use data by dynamic differential GPS tech-nology ,and analysis using GIS spatial analysis of land use change in the number and direction .The experiment results show that the use of GPS and GIS integration technology can be high-precision ,high-efficiency and low-cost and timely monitoring of basic farmland dynamic changes in information .
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