Shifting cultivation
Because the soil is no longer protected by the large trees in the rainforest system, it can be ruined easily by heavy rains and too much sun. One of the main problems with shifting cultivation is that the land is ruined after being used 3 or 4 times. Areas of land are abandoned and not prepared to grow again, and the rainforest becomes smaller with each preparation for a new piece of land. The land loses its fertility and so this is not a reliable form of cultivation.