分析了依信息学确立的景观信息流在景观异质性制图的意义，及景观信息流的测度、特征和遥感与GIS对其获取的方法，探讨了景观信息流转换的表达方式。其次，把景观信息流反映在地学异质信息中，着重分析脆弱生态景观地学的异质性特征、响应以及利用GIS建立脆弱生态景观异质性制图的方法，对科尔沁沙地东南部的景观异质性特征作了分析。

Fragile ecological environment is a unstable factor influence on live-supporting environment, lead to environment gradually deteriorated, in the paper processing from landscape and landscape ecology, first the meaning of mapping in landscape heterogeneity under landscape information flow determined by informatics, the measurement, the character and obtaining methods of landscape information flow have been discussed, in the meant ime, the way and expression of transform in landscape information flow pattern have been introduced. Second, the lanscape information effect in geoscience heterogeneity information has been discussed, in particularly the heterogeneity information in fragile ecological landscape has been analyzed. In further the mapping method of landscape heterog eneity in fragile landscape ecological environment based on GIS has been stated. Using date acquired by Landsat TM 1:250000 and 1:500 000 around 1990s and GIS in southeast of Horqin Sandy Land, combining with dates of investigated to the area from 1970s to 1980s, fragile ecological landscape heterogeneity map and land cover in the area have been provided.