What would our world be like without forests? Can you talk about it?

According to statistics, about 654.38+0.5 billion trees are cut down every year, and the forest area is gradually decreasing. If we continue to cut down forests at this rate, we will never see a big tree again in about 200 years. So, what would the air be like without trees?

A big tree produces enough oxygen for ten people to breathe every year, but there are trillions of big trees on the earth. The oxygen they produce meets our survival needs, affects air quality and purifies chemicals in the air. Leaves can absorb all kinds of pollution particles in the atmosphere. If there were no trees, you would find more pollutants in the air. You know, in 20 15, about 6.5 million people died of air pollution around the world.

At the same time, without trees, the temperature of the earth will rise. Trees can reduce the temperature of the earth in many ways. They can provide shade and release water through photosynthesis. Photosynthesis absorbs water from the edge of trees and transports it into the air. When water enters the clouds, it forms rain, and then the trees will absorb the rain again, forming a perfect water cycle. Without this water cycle, the rainfall on the earth would decrease. According to scientists' estimation, if there were no Amazon rainforest, the rainfall there would be reduced by 20%. So if there are no trees, it will soon cause a global drought, the water level of lakes and rivers will drop, and a long-term large-scale drought will lead to millions of deaths.

You know, the relationship between trees and soil is very close. It can absorb chemicals in water, prevent these harmful substances from entering the soil, and protect the soil from rain erosion. When the ground is too wet, it can also absorb the water on the ground. If there are no trees, rain will pollute the soil, make the soil full of various chemicals, and the vegetation will disappear with it. The disappearance of weeds and shrubs will make the earth desolate. Moreover, without trees, storms will ravage the whole land, dangerous mudslides and soil degradation will completely change our lives, and all kinds of crops will not grow. Even if they can grow, the output will be greatly reduced.

Due to the reduction of forests, the number of various insects is decreasing at the rate of 2.5% every year. Bees, butterflies and other insects will pollinate our crops. Without forests, there would be no pollinators. It will become more difficult for us to grow anything, and vegetables and fruits will disappear from our lives. Without trees, some fruits, such as banana leaves and apples, would not appear. 50% of the animals in the world live in the tropical rain forest, not counting the animals in other forests, such as deer, rabbits and various birds. If there are no trees, where will these animals go? They can only become extinct if they can't adapt to the environment. Maybe by that time, there will be only bacteria, viruses and some microorganisms on the earth except human beings.