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  2. Soil acidification - Wikipedia

    en.wikipedia.org/wiki/Soil_acidification

    Impacts of acidic water and Soil acidification on plants could be minor or in most cases major. In minor cases which do not result in fatality of plant life include; less-sensitive plants to acidic conditions and or less potent acid rain. Also in minor cases the plant will eventually die due to the acidic water lowering the plants natural pH.

  3. USDA soil taxonomy - Wikipedia

    en.wikipedia.org/wiki/USDA_soil_taxonomy

    Histosol – organic soils, formerly called bog soils, are 1% of soils worldwide. Inceptisol – young soils. They have subsurface horizon formation but show little eluviation and illuviation. They constitute 15% of soils worldwide. Mollisol – soft, deep, dark soil formed in grasslands and some hardwood forests with very thick A horizons ...

  4. Soil matrix - Wikipedia

    en.wikipedia.org/wiki/Soil_matrix

    The type of clay that is formed is a function of the parent material and the composition of the minerals in solution. [13] Clay minerals continue to be formed as long as the soil exists. [14] Mica-based clays result from a modification of the primary mica mineral in such a way that it behaves and is classed as a clay. [15]

  5. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    Water is a critical agent in soil development due to its involvement in the dissolution, precipitation, erosion, transport, and deposition of the materials of which a soil is composed. [39] The mixture of water and dissolved or suspended materials that occupy the soil pore space is called the soil solution. Since soil water is never pure water ...

  6. Physical properties of soil - Wikipedia

    en.wikipedia.org/wiki/Physical_properties_of_soil

    Soil texture is determined by the relative proportion of the three kinds of soil mineral particles, called soil separates: sand, silt, and clay. At the next larger scale, soil structures called peds or more commonly soil aggregates are created from the soil separates when iron oxides , carbonates , clay, silica and humus , coat particles and ...

  7. Oxisol - Wikipedia

    en.wikipedia.org/wiki/Oxisol

    The main processes of soil formation of oxisols are weathering, humification and pedoturbation due to animals. These processes produce the characteristic soil profile . They are defined as soils containing at all depths no more than ten percent weatherable minerals , and low cation exchange capacity .

  8. Soil formation - Wikipedia

    en.wikipedia.org/wiki/Soil_formation

    The soil production rate due to weathering is approximately 1/10 mm per year. [5] New soils can also deepen from dust deposition. Gradually soil is able to support higher forms of plants and animals, starting with pioneer species and proceeding along ecological succession to more complex plant and animal communities. [6]

  9. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    Rainfall: Average rainfall has a pH of 5.6 and is moderately acidic due to dissolved atmospheric carbon dioxide (CO 2) that combines with water to form carbonic acid (H 2 CO 3). When this water flows through the soil it results in the leaching of basic cations as bicarbonates; this increases the percentage of Al 3+ and H + relative to other ...