The role of trees

Trees can adjust the climate, purify the air, prevent wind and reduce noise, and are the best friends of mankind.

Trees are oxygen factories. L hectares of broad-leaved forest can absorb carbon dioxide 1 ton in 1 day and release 0.73 ton of oxygen.

Trees are dust filters. When the airflow with large dust content passes through the forest, with the decrease of wind speed, the dust with large particles in the air will fall rapidly. In addition, some trees have fur on their skin or can secrete grease, which can stick dust to their bodies, thus greatly reducing the dust content in the airflow through the forest.

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 bacteria per cubic meter of air in department stores, 580,000 in boulevards, 100 in parks and only 55 in forest areas. The difference of bacterial content in the air between forest areas and department stores is more than 70 thousand times.

In addition, trees are natural reservoirs and natural air conditioners.