What causes soil to be destroyed?



  1. 0 Votes

    One huge source of soil ruin is synthetic nitrogen use.  Once seen as a good deed for the environment, because it was thought that synthetic nitrogen helped build carbon in soil, now is viewed a bit differently and not in a good way. A team researchers from the University of Illinois argue that the net effect of synthetic nitrogen use is to reduce soil’s organic matter content. As organic matter dissipates, soil’s ability to store organic nitrogen declines. A large amount of nitrogen then leaches away, fouling ground water in the form of nitrates, and entering the atmosphere as nitrous oxide (N2O), a greenhouse gas with some 300 times the heat-trapping power of carbon dioxide.

  2. 0 Votes

    Soil degradation is the result of both natural causes and human land usage. 

    Here is a list of the three main culprits:

    1. Erosion – occurs when valuable topsoil is carried away by water and wind or cleared by humans through building, overgrazing, fires, etc.
    2. Desertification – occurs when a once fertile area begins to become desert land and usually the result of land mismanagement, overgrazing and logging. 
    3. Salinization and Nutrient Loss – results of both natural and human causes.  Large-scale irrigation can leave salt concentrations near the soil’s surface, which hinders water absorption by crops.  Organic farming (sometimes referred to as low-input agriculture) can also degrade soil if no measures are taken to replenish the soil’s essential nutrients after crops are harvested.  
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