What is the reason why the Amazon rainforest is called "the lung of the earth"

When it comes to Brazil, the first thing you think of is the rainforest. As the country with the largest area of tropical rain forest in the world, we can enjoy the most beautiful rain forest scenery here.

Tropical Rainforest-"Lung of the Earth, Green Heart"

The dense trees in the rainforest absorb carbon dioxide and release a lot of oxygen during photosynthesis, just like a large-scale "air purifier" on the earth, so the tropical rainforest has the reputation of "the lungs of the earth". In addition, the tropical rain forest is rich in water vapor, which condenses into clouds after evaporation and then rains, becoming an important part of the earth's water cycle; It not only contributes to soil fertility and biological growth, but also has the function of regulating climate; Changing the low-level airflow can prevent sandstorms, alleviate floods, conserve water and maintain soil and water; Rainforest is also the habitat of many kinds of animals, the growth place of many kinds of plants, and the most active area for biological reproduction on earth; Rainforests also provide wood for production and life and beautify the environment.

Tropical rain forest-"scarred"

According to the survey of the United Nations, the global rain forest is being destroyed on a large scale, and a large area of rain forest is being destroyed, and the Brazilian Amazon rain forest has not escaped bad luck.

A large number of immigrants poured into the edge of the Amazon rainforest. They regard the forest as farmland, cut it down and cultivate it, drive heavy tractors into the forest, cut down trees and set it on fire. The ecological environment in forest areas has been seriously damaged, soil nutrients are exhausted and desertification is serious. Multinational enterprises have also taken a fancy to the rich local mineral resources such as iron, copper and bauxite, and spared no expense to exploit them, making the tropical rain forest gradually disappear. The rainforest is bleeding.

Protect the rainforest and defend life.

The rise and fall of tropical rain forest is not only related to the future of biological resources, but also leads to a sharp deterioration of the global climate, so we must pay close attention to it.

If the tropical rain forest no longer exists, the environment and climate of the earth will undergo great changes, and such changes will undoubtedly be a devastating disaster. Now, the whole world calls for the protection of tropical rain forests. Thanks to the joint efforts of the local government in Brazil and other countries in the world, the tropical rain forest here has been protected.

Protecting the tropical rain forest is everyone's responsibility. We should start from now on and start from ourselves. I believe that with everyone's efforts, this beautiful green necklace on the earth will shine forever.

Author: Guo

Audit: Han Lei

This work is the original of "Popular Science China-A Brief Introduction to Scientific Principles", please indicate the source for reprinting.