Causes of making clay, has two large.
1. damaged by natural destruction is windy. Tides eroded the soil water dog away blows is missing.
2. damaged by human destruction is.
2.1 the big problem is deforestation. There is no rain water or earth page. Thus, soil erosion, water and thick, perfect.
2.2 the agricultural peasants of agriculture is the way.
-Plants of the same type for a long time without change or other kinds of plant loop to make fertilizers according to the depth of the root crops is applied until the soil is deteriorating the integrity.
-Use chemical fertilizers and chemicals for a long time. It may have a positive effect on the plant, but will go to destroy the Earth and consumers.
-Plow or wet soil, land, flora, while.
-Digging ground to sales.
-Burning soil
How to prevent the polluted soils
1. planting vetiver a frontline Board to prevent soil erosion.
2. plant ground cover to protect soil, soil erosion, and help retain water in the soil and moisture, CHUM.
3. plant a Narita lathua remove switch to another plant, to add to the Nitro.
4. the use of fertilizers and manure instead of fertilizer, chemical, to not make the clay and soil.
5. planting perennials that nourishes the soil sample chamcha Acacia Acacia thepha campaigning, etc.