Abstract: There is serious soil erosion in loess gully. Adopting what kind of comprehensive control model will directly affect the sustainable development of erosive gully of loess. Based on complex open system theory, this paper used the topography analysis method, and focused on two typical erosive gullies of loess in Sanyanjing Watershed, Shouyang County, Shanxi Province, to explore the pattern of regolith stormwater storage. Accordingly, an ecological management mode was put forward. The results showed that the water storage of erosive gully is mainly located in the regolith. The core of the regulation of erosive gully is to combine the habitat and the regolith organically. The method using superposition of high resolution images of large scale topographic map for topography analysis can accurately identify the ecotope composed of retention basinheadland of different scales. Based on the pattern of regolith water storage, rationally allocating plant materials can effectively improve the surface habitat and fundamentally govern the erosive gully of loess. This approach is in line with the natural ecological law, so as to achieve ecological health of erosive gully complex ecosystem in loess.

Key words: landscape pattern, GIS., park green space, patch, optimization