Question

How do trees in a forest help to maintain the fertility of soil ?

Answer 1

Trees increase the soil's ability to absorb and retain water, produce nutrients for plants, maintain high levels of organic matter in the soil, and moderate soil temperatures. ... Agroforestry also helps reduce the risk of soil salinization, now increasingly common in arid and semi-arid regions.
HOPE IT HELPS YOU.

Answer 2

forests help in maintaining the fertility of soil by holding the soil .it prevents from soil erosion which is a factor of losing fertility.