Metaphor of forest regulating climate

Forests can not only provide people with a lot of wood, but also play an important role in regulating atmospheric composition, smoking and dust retention, purifying air, involving water sources, reducing noise, increasing air humidity, protecting fields from wind, conserving water and soil, beautifying the environment and providing habitats for wildlife, so people call forests "the master dispatching room of nature".

So the answer is: purify the air; Hidden water source; Wind and sand fixation; Soil and water conservation; Main control room of nature.