This is what we called deforestation.
What is deforestation?
Deforestation is the permanent removal of standing forest. It is the clearing, destroying and removal of trees through deliberate, natural or accidental means.
Because of this, what happens is that the negative effects of climate changes are decreased. If rainforests are depleted through deforestation, carbon dioxide is allowed to escape into the atmosphere and it combines with the other gases which compose this blanket of air.
Also One of the most dangerous and unsettling effects of deforestation is the loss of animal and plant species due to their loss of habitat; not only do we lose those known to us, but also those unknown, potentially an even greater loss
In addition to the loss of habitat, the lack of trees also allows a greater amount of greenhouse gases to be released into the atmosphere. Presently, the tropical rainforests of South America are responsible for 20% of Earth’s oxygen and they are disappearing at a rate of 4 hectares a decade. If these rates are not stopped and reversed, the consequences will become even more severe.The trees also help control the level of water in the atmosphere by helping to regulate the water cycle.
Also With fewer trees left, due to deforestation, there is less water in the air to be returned to the soil. In turn, this causes dryer soil and the inability to grow crops, an ironic twist when considered against the fact that 80% of deforestation comes from small-scale agriculture and cattle ranching