GEO 101 Chapter Notes - Chapter 21: Red Color, Inceptisol, Available Water Capacity
13 Nov 2017
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2: three size grades: sand, silt and clay, size is very influential in how a soil holds water, soil colloids finest/smallest particles in soils. Soil acidity and alkalinity: measured using the ph scale. 3: acid ions include hydrogen (h+) and aluminum (al+++) ions; not plant nutrients, impacts soil nutrients because it interferes with colloids, as acid ions increase; acidity increases, replaces nutrients (washed away) and reduces soil fertility. 5: finer textures hold more water than coarser (sandy soil has smaller capacity; clay soil has large capacity, water stored within a soil is depleted by evaporation and transpiration. Porosity: porosity: available pore spaces, voids control the flow of water, translocation: soil-forming process where materials are moved within the soil body, usually from one horizon to another. 8: form under grass and savanna vegetation in subtropical and tropical climates with dry season.
