Abstract

Some methodologies were compared in providing maps of surface, rill and gully erosion features, in research which took place in the Jajrood basin, north-east Tehran, Iran. A photomorphic unit map was produced from processed satellite images, and four other maps were prepared by the integration of different data layers, including slope, plant cover, geology, land use, rocks erodibility and land units. Comparison of ground truth maps of erosion types and working unit maps indicated that the integration of land use, land units and rocks erodibility layers with satellite image photomorphic units maps provide the best methods in producing erosion types maps.

Key words: Jajrood basin, geographic information system, remote sensing.