how does erosion make soil lose its nutrients?

Answer 1

Erosion usually takes away all the soil so there is no soil to work with.

In most cases the nutrients have to be water soluble for the plants to benefit.

If the soil is inundated and the water drained away then the nutrients go with it.

If the water simply evaporates then the nutrients remain.

Answer 2

Most of the nutrients are present in the upper soil. During erosion the upper layer of soil containing nutrients gets off with flowing water and hence the elements of soil gets depleted.

Answer 3

erosion is the removal of top (upper crast) soil wich contains nutrients for the soil. These are either washed away by water, wind etc.

soil lose its nutrients when they are washed away to a different place. Normally from hills to lower land. The hills becomes unfertile while the lower land becomes fertile because of the nutrients washed from the high lands.

Answer 4

Topsoil (on top!) is usually rich with nutrients contained in humus from dead plants and roots. Living plant roots hold the humus in place until perhaps a fire or drought destroys the plants. Although nutrients may leach down to lower soil levels they may also be carried away with ground water trying to reach a lower water level when there is a gradient or slope. Erosion (wind and water) may wash away the nutrient-rich topsoil leaving rock, sand or clay.