GEOG 1220 Lecture Notes - Lecture 9: Overgrazing, Non-Renewable Resource, Rill
4 Apr 2016
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Lester brown: world on the edge chapter 3 (pp. Slide shows: water erosion model / desertification and. The study of soil provides a good illustration of the multiple scales at which geographers work; from the consideration of soil properties at very localized and small scale to studying human impacts spanning entire countries or continents. Soil, by nature of its formation and location, is at the crossroads of the geosphere. Residing at the top of the lithosphere, soil is formed largely by physical processes initiated within the lithosphere, such as weathering. Soil also serves as a sink and pathway for moisture in the hydrologic cycle (soil retains water as well as provides a conduit for water to seep into the ground; water is also released from the soil via evapotranspiration). In the biosphere, soil provides habitat for the majority of the earth"s species, primarily insects.
