If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest this is because.

Tropical rainforests exhibit a unique nutrient cycle where most nutrients are stored in the living biomass rather than the soil. High temperatures and abundant moisture lead to the rapid decomposition of dead plant matter by bacteria [1]. These released nutrients are immediately absorbed by the dense root systems of the lush vegetation, leaving the soil deficient in organic matter and humus [1]. Consequently, the soils are often highly leached, acidic, and nutrient-poor red latosols [2]. When the forest is cleared, the rapid nutrient cycling is disrupted; the thin litter layer is washed away, and the underlying soil lacks the fertility required to support quick regeneration [1]. In contrast, tropical deciduous forests have more nutrient-rich soils due to seasonal leaf fall and slower leaching, allowing for faster recovery. Therefore, the primary reason for slow regeneration in rainforests is the inherent nutrient deficiency of the soil once the vegetation is removed.

Sources

1. [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 3: MAJOR BIOMES > 1. Tropical Evergreen Rainforest Biome > p. 5
2. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 3: Terrestrial Ecosystems > 3.2.5. Tropical rain forests: > p. 25