Topsoil

 

  Soil contamination and mismanagement

The most important environmental problems that affect the soil:

1. Desertification
2. High salinity
3. Cliffs soil
4. Build factories and houses
5. Blaze a trail

First: soil contamination
Defined: to change the properties of the soil physical, chemical and biological by adding materials to or removing materials.

 Most soil contaminants:
 Soil is exposed to multiple pollutants come from human activities, notably:
Fertilizers (fertilizer): where lead misuse to change the chemical properties of the soil, which losing Atzanha.
Pesticides: such as fungicides, insects, weeds and rodents as well as smokers and all of which are used in spray plants or placed above the soil surface, or inside, as it enters the components of the soil and move to other places mediated by water or air and mostly associated with soil particles. The observed increase in its concentration in the upper class, as part of it enters the food chain.

  Salinization:
  Causes: the use of water containing a high percentage of salts to irrigate crops.
          The use of chemical fertilizers.
 Impact: Do not allow only a small number of plants in the living lead to reduced vegetation. Increased soil erosion.

Second: poor soil management
 Is a set of factors such as:
Drift.
Urbanization.
Construction of roads at the expense of agricultural soils.
Use one crop to the soil.