| Special ecological environment and high grazing press make landscape of semi-arid hilly loess plateau a unique one---- goat road landscape. Based on method and theory from landscape ecology and grazing ecology, we have a preliminary analysis and simulate about goat road landscape.According to the camera sampled, field measurements and geographic software like ARCGIS and ERDAS processing, we got the data about cover types and micro-topographic of goat road landscape. Through these data, we find out some features of goat road landscape:1) goat road landscape is alternated with goat road and non-goat road, goat road form a network structure, such network divided plants into several irregular patches. There are few plants on goat road, and more plants on the up part of non-goat road, and most of these plants are perennial Artemisia frigide, which has strong anti-erosion ability, the other part of non-goat road are crust.2) the grids with plant have higher DEM (Digital Elevation Model) value than the grids with nothing. The difference is between Ocm and 50cm.3) the width of most goat road are less than 20cm, the average width is 16cm; compare to that, the average width in non-goat road is 63cm.4) the soil compaction of goat road are generally larger than non-goat road.5) the slope of goat road is less than 20°, it is significantly lower than non-goat road.This paper analyzes the formation theory of the goat road landscape, assumes the formation process, and use cellular automata model to simulate it's forming process. Taking into account the effect of vegetation changes on the micro-topography and vegetation and micro-topography effects on goat road selection, we set the rules about soil erosion and goat road selection to simulate micro-topography changes and the formation of goat road. Results show that the soil compactness, perennials, micro-topography, deviation position and the search range are main factors of goat road formation, these factors were better able to simulate the goat road.
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