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Topography is the configuration of Earth's surface including both natural and human-made features. Geomorphologic classification of topography by characteristic landform or relief is commonly used to identify a type of topography. However, much attention is required to separate physiographical patterns, which consider additional factors that affect vegetation and agricultural condition such as soil moisture and soil texture, from landform or relief. In the case of agricultural lands, surface conditions should be carefully considered. Since topography is a soil-forming factor and controls cross-sectional patterns of a soil, ability to identify various types of topography is required for an accurate soil survey. Researchers should assess how topography affects agricultural activities and land use as well as the need to investigate types and the luxuriance of growth of vegetation and agricultural activities on each landscape. In a soil survey, topography is classified by mountain, lava terrace, cinder cone, hill, pediment, fan, interrill area, diluvial plain, fluvial plain, and fluviomarine plain

(Source: Korean Rural Development Administration, National Institute of Agricultural Science and Technology, 2007)