Now human beings pollute the environment and cut down trees, causing a series of damage. People will never consider the consequences for their own interests. Cutting down trees will reduce oxygen. As far as I know, all oxygen comes from plants. Each tree can absorb 0. 1 kg of carbon dioxide and produce 0.75 kg of oxygen every day. Without oxygen, human beings can't survive, only extinction.
White pollution is widely used in China. Most restaurants use lunch boxes that cause white pollution. It will destroy the environment of the earth. Not only that, it will cost a lot of money to get rid of them.
People use a lot of disposable wooden chopsticks, which leads to how many trees people have to cut down to make these things. Every 40 thousand pairs of disposable wooden chopsticks need the wood of a big tree, which will cause much waste of resources.
There are more and more private cars. Cars will emit exhaust gas, which will pollute the air. The sky will become foggy and we can't see the blue sky. We will inadvertently inhale waste gas into the lungs, causing cough, colds and other diseases.
Gasoline is a precious resource for human beings. It took hundreds of millions of years to form. There are too many private cars now, and we have run out of gasoline. What shall we do? Now there is less and less gasoline, and the oil price of oil companies is also rising sharply. There are fewer and fewer resources left for future generations.
Water is a precious resource for human beings. Now we pollute the sea water and throw rubbish on it, which makes the sea water very polluted and stinks. Meanwhile, it hardly rained in 2004. Cherishing water means cherishing life.
As far as I know, China people only have 2200m3 of water a year, ranking 1 10 in the world. In some places, despite the worst drought in 50 years, they are still scrambling for water, and there is no sense and feeling of saving water at all.
We should cherish and care for nature, and caring for nature means protecting our home. I hope these wishes can come true. It is said that China uses 45 billion pairs of disposable chopsticks every year. I wonder how many trees will be cut down if half of them are picked out for paper making. Those "environmental fighters" can chop down one or two hundred Jin of bamboo every day, and a farmer's income is about 10 yuan.
The following are the hazards caused by deforestation:
1. Destroying the environment will lead to sandstorms, sediment loss, land reduction and ecological imbalance.
Large-scale concentrated rainfall is the primary cause of the Yangtze River flood. However, this year's precipitation is not the largest in history. So far, the total flow of the Yangtze River in flood season is only 20 billion cubic meters, far less than the 654.38+000 billion cubic meters in 1954. However, the water level in many areas of the Yangtze River has reached the highest level in history and has remained high for a long time. This shows that there are other more important reasons for the flood.
It's not like the rainstorm caused the flood. Green vegetation can fully absorb water, stop mountain torrents in rainstorm season and store water in dry season. According to economists' estimation, the water storage function of 6.5438+10,000 mu forest is equivalent to a 2 million cubic meter reservoir.
2, the ozone layer is getting thinner and thinner, carbon dioxide can't carry out photosynthesis, oxygen is reduced, and carbon dioxide is increased.
The role of trees is to produce oxygen, reduce carbon dioxide and dust, purify the air, make organic matter, solidify soil, make chemical raw materials, prevent wind, cool down and transform inorganic matter, so they are indispensable producers in the biosphere. An acre of forest can absorb 67 kilograms of carbon dioxide and release 49 kilograms of oxygen every day. An acre of trees can evaporate 42 tons of water in a summer, which can reach 300~500 tons a year. One acre of trees can collect 22~60 tons of dust a year. One acre of trees can absorb 4 kilograms of toxic gases a month.
3. Loss of water resources
An acre of forest land stores 20 tons more water than an acre of forest land. The current situation of forest resources in China is as follows: forestland area is 263.295 million hectares, forest area 15894. 10000 hectares, and national forest coverage rate16.55%; The total standing stock is 65.438+0.249 billion cubic meters, and the forest stock is 65.438+0.65438+0.27 billion cubic meters. Except Taiwan Province Province, the national plantation area is 46.667 million hectares, and the plantation stock is 65.438+0.0 1 100 million cubic meters.