Slogan of cutting down trees

Look at the picture composition: it is everyone's responsibility to care for trees.

On a big mountain, there is a lush forest. Every morning, thousands of rays of sunlight shine on the earth through dense cracks in trees. People often come here for a walk and exercise. Every day, you can see a peaceful scene in this big forest.

However, in this wonderful environment and atmosphere, there are also some disharmonious pictures. One day, a lumberjack sneaked in, wearing a hat and a cigarette in his mouth. He looked flustered and looked around. Of course he doesn't want others to find out his whereabouts.

He is a businessman, thinking about how to get rich and make a lot of money all day. One day, he heard that the price of wood has gone up, so he can sell it at a high price. So he picked up the big axe at home and went to the forest, where he carried out his secret operation unnoticed.

He looked around and walked around looking for a tall tree to do it. Finally, he found a tall and strong tree deep in the forest. His eyes sparkled with greed, and he ran quickly to the tree. He came under the tree and exclaimed, "Wow! What a big tree! It will definitely sell for a good price. " He raised his axe and chopped at the tree, singing: "La la la! La la la! I am an expert in cutting trees! " The sound of cutting trees woke up the woodpeckers on the trees. It lowered its head and said, "This wooden head dares to destroy our home, and I want you to look good." Then he flew down and landed on the woodcutter's shoulder, pecked the man's head hard and said, "There must be bugs in this wood." The woodcutter screamed in pain, which attracted all the people nearby and sent him to the forest police station together.

The forest policeman taught him, "Even woodpeckers will not let you go. You must have bugs in your head. The forest is not only the home of animals, but also the home of human beings. Trees are a gift from nature, protecting us from sandstorms and preventing soil erosion. In addition, trees absorb carbon dioxide and provide fresh air for human beings. Trees always contribute silently to mankind. Not only do you not cherish and protect them, but you also destroy and cut them down. It's so greedy! " After hearing these words, the woodcutter felt ashamed. From then on, he turned over a new leaf and became a volunteer to protect the forest.

Through this cartoon, we are also reminded to be careful to protect the beautiful nature from any harm. Caring for trees is everyone's responsibility, so that nature can better benefit our future generations. Trees are our friends. If they are cut down at will, there will be more and more carbon dioxide in the air, which will warm the earth and destroy its biological balance. Humans will not survive. Let's all join the volunteer team, protect the big forest and protect our home on earth.

Knowledge Link: Carbon dioxide is a non-toxic gas, which has no obvious harm to human body, but it can change the thermal balance of the atmosphere. The increase of carbon dioxide content in the atmosphere does not affect the solar radiation passing through the atmosphere. However, because carbon dioxide can absorb the infrared radiation of the earth, it will lead to an increase in the temperature of the near-surface atmosphere. Near-surface atmospheric warming will enhance ground evaporation and increase water vapor in the atmosphere. The increase of water vapor in the atmosphere will further enhance the absorption of infrared radiation from the earth by the near-surface atmosphere. Because of this interaction, the increase of carbon dioxide in the atmosphere changes the original atmospheric thermal balance, leading to global warming. Experts estimate that if the carbon dioxide content in the atmosphere increases by 25%, the near-surface temperature will increase by 0.5-2.0 degrees Celsius; If the carbon dioxide content in the atmosphere increases by 100%, the near-surface temperature will increase by 1.5-6.0 degrees Celsius. If this estimate is correct, the impact of carbon dioxide on the global climate can not be ignored after the middle of 2 1 century.