区域分异研究是区域开发及生态环境保护的重要基础工作 ,GIS在土壤贫瘠化区域分异研究中的应用是GIS技术在土壤地理学中应用的重要方面。以福建为例 ,在GIS技术支撑下 ,利用多元数理统计方法 ,提出了一个反映土壤养分贫瘠化状况的综合性指标 ,计算并输出福建土壤贫瘠化等级图 ,据此分析了土壤贫瘠化的区域分异特征 ,表明 ,GIS技术在这一领域的应用具有先进性、区域分异研究工作的高效性和成果的实用可靠性。 The study of regional differentiation is an important basic work of regional development and ecological environment protection. The application of GIS in the study of regional differentiation of soils is an important aspect of GIS application in soil geography. Taking Fujian as an example, with the support of GIS technology, a comprehensive index reflecting the status of soil nutrient depletion was proposed by using the method of multivariate mathematical statistics. The level of poor soil in Fujian was calculated and output. Based on this, The differentiation features show that the application of GIS technology in this field is advanced, the efficiency of research on regional differentiation and the practical reliability of results.