According to statistics, the amount of rainfall measured in areas with dense forest coverage is several times greater than in places without forests. The amount of rainfall, whether high or low, is determined by the amount of moisture in the air.
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| Rainfall measured in forested areas is several times greater than in non-forested areas (Photo: craigPotton) |
The moisture content is distributed unevenly across different regions. In Southern China, the air contains significantly more moisture than in the North, and the Eastern region has more moisture than the Western region. Therefore, the annual rainfall in these areas is also higher.
The reason why forested regions experience more rainfall than those with less forest cover is the same: forests act like giant pumps, continuously extracting large amounts of water from the ground and releasing it into the atmosphere through the trees. It has been calculated that one hectare of forest can evaporate approximately 300,000 liters of water each year, which explains the high rainfall in densely forested areas.
This raises a question: With such a large amount of water being “pulled” into the sky, why doesn’t this forested area suffer from water shortages? The soil beneath the forest always retains water, and when it rains heavily, these forested regions can quickly replenish the moisture that has been evaporated. This continuous cycle allows the trees in the forest to thrive and grow lush and dense.
