Since it takes many years for topsoil to form and there are many ways to lose it, it is essential that we practice measures to conserve topsoil. One of the largest difficulties concerning soil conservation is simply getting it to stay where it is. It is easy to see how plant roots hold topsoil in place and slow the action of erosion, much like rebar supports a concrete building. Once plants are removed from the land, wind and water are free to move topsoil around. Losing topsoil is bad, but so is increasing the amount of chemicals and trash we put in our soil.
Soil pollutants are harmful because they can be leached from the soil and deposited in water.
Practices to decrease soil pollution include limiting the use of agricultural chemicals and building landfills with leak-proof liners.