SOIL EROSION

DEPLETION OF SOIL MATERIALS

•minerals can be

exhausted by

overproduction

•soil that is depleted of

minerals become acidic

or sour and causes

damage to crops

•lime and fertilizers are

added to the soil to

correct this condition

LOSS OF ORGANIC MATTER

• The organic matters on the

topsoil decays slowly.

• Humans may disturb the

this natural balance by

planting & harvesting

crops too frequently.

• Sometimes wood& native

grasses are burned down

before plowing.

EROSION

• a destructive process by

which soil is lost by water

& wind

• happens when poor

farming method are

applied

LEACHING

• When the field is plowed

before planting rain soaks

into the pulverized soil

easily.

• If the material in the topsoil

is not dissolved in water

plants can’t absorb them

thus the fertility of the soil

is lost.

SOIL PROBLEMS

can lead to water problems too

WATER PROBLEMS

Groundwater is depleted by humans through

overconsumption in cities and run-off water.

too much run-off water results from heavy rains

deep wells supply drinking water and draw

greatly on the supply of groundwater

WATER PROBLEMS

water problems caused by soil problems:1. droughts- aftermath of too much rain rushing

immediately to the sea since there are less trees to store water

2. flood- aftermath of denudation

these result from misuse of soil and its plant cover

(due to deforestation)

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