The second is the slow progress in the disposal of hazardous waste and medical waste, and the unorganized recycling and disposal of used electronic products. Resulting in the land is polluted, all kinds of plants die one after another. There are also irrational human production activities and predatory exploitation of natural resources in recent decades, breaking the self-recovery and balance mechanism of the natural ecosystem.
The most critical is the serious desertification in large areas. Desertification is an important environmental problem in the world at present, because of the irrational use of water by human beings, which has caused the land in many places to dry up and finally become desertified.