土地特性相对均一的地块，评定和划分土地的基本空间单位。
具有几个土地要素层的综合土地单元制图在土地研究中正在获得日益广泛的应用，它是计算机制图的基础。
Integrated Terrain Unit map (ITUM) with several overlays of land elements is being developed in the world. The ITUM is a new computer mapping system.
通过对有关数据进行分析、整理，充分吸纳相关专家知识后，运用GIS技术建立浦江县土壤单元图、气候分区图和土地单元图。
Soil unit map, climate zones and land unit map of Pujiang were produced using GIS technology and expert knowledge, based the data collected.
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