In ancient times, the earth's climate was warm and humid, the air was fresh, the water was abundant, the vegetation was dense, the birds were singing and the flowers were fragrant, and it was an ideal habitat for human beings. However, in recent years, with the increase of population in this area, a lot of land has been reclaimed, and people use wood as fuel, resulting in a large number of forests, soil erosion, river bed blockage and other evil consequences.
Forests used to be natural and green places where animals lived, where they could live leisurely. But it didn't last long. This "land of geomantic omen" was discovered by human beings. They reclaimed forests to build houses and factories. Since then, it has become a habitat for human beings and a concentration camp for animals, and the animals have to try their best to escape. But where did they escape to? Plants (that is, producers) are the most important link in the food chain. If there is a serious problem in this link, it is equivalent to cutting off the lifeblood of animals. As a result, animals cannot survive and are on the verge of extinction. Don't forget, people are just so-called "higher animals".
The forest resources needed for human life could have been regenerated and made a long-term contribution to mankind. However, the demand for forest resources is increasingly short due to the indiscriminate felling of trees to make paper, make furniture and build railways and houses. Trees have a wide range of functions, so people cut them down in large quantities, and more and more trees enter the processing plants, so that some tree species gradually disappear. People cut down trees at will, causing soil erosion and flooding. Although some people with public morality and environmental awareness will stop them from doing so, it will hardly help: there are still some people who cut down trees under the banner of "demand", but there are not a few. Some people think that it doesn't matter if you cut down some forests on the earth. This statement can be said in ancient times; Now, all wet. If you cut "some" and I cut "some", the forest resources will only be less and less, and the desert area will only increase day by day. Maybe in the near future, the earth will become bare.
There is an old saying: "There are many creatures with soil fertility, and the limit that human beings can reach is great. If you take it in moderation and use it in moderation, you will always be satisfied; " If you overuse it and use it without restraint, it is often not enough. "It's not clear? Development is very important, and beyond this level, it is a bad result. But you have to swallow this bitter pill yourself.
Besides, trees can purify the air. This is why the air quality in cities is always inferior to that in mountainous areas: there are more cars and fewer trees, and the trees are too busy.
In modern society, almost every family has a car, which will emit exhaust gas. Abandonment will pollute the environment and endanger people's health. Leaves can adsorb dust, thus reducing the harm of air pollution to human health. Surrounded by green trees, people can calm their nerves, lower their blood pressure and easily relieve fatigue. Trees can also make oxygen. One hectare of broad-leaved forest can absorb 1 ton of carbon dioxide and release 0.73 ton of oxygen in 1 day. Trees are experts in sterilization. Many trees secrete fungicides during their growth, killing all kinds of germs brought by dust. According to the survey, there are 4 million department stores, 580,000 are on the boulevard, 65,438+000 are in the park, and only 55 are in the forest area. The difference of bacterial content in the air between forest areas and department stores is more than 70 thousand times. You can see how important trees are. In addition, trees can also adjust the climate, prevent wind and noise, store water and prevent drought, and are human's best friends.
Trees have helped us a lot. They can make us live a better life. Will you cut them down without mercy? Arbor Day is coming. With the spring, we put tree species into the soil, nourish them and make them grow into lush forests!