EVSC 220 Lecture Notes - Lecture 2: Soil Horizon, Weathering, Gleysol
8 Dec 2018
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Document Summary
Di erent soil association associated with grasslands and forests. When sodium get in to a soil it can cause dry particles to disperse which leads to dense b horizons, or but. The result of a ground water, soil has been exposed to reducing conditions ( deprived of oxygen ). Oxidized iron is bright red and does not move with water, reduced iron is bluish and mobile in the soil. Forest soils - accumulation of organic material = lfh layer. The lfh layer includes fresh, fabric and humid material decomposition. Organic layers form when the organic later of disposition is greater than the later of. High below ground soil organic matter, malanization. Gleying ( in water saturated areas ) Low soil organic matter input ( very little soil development ) High sodium parent material or groundwater discharge. Cantena: regosols on tops of hills, gleysols in depressions and chernozomes pretty much everywhere else.
