Why monoculture of a particular type of trees is not good for natural forest?

Monoculture of a particular type of tree can negatively impact natural forests by reducing biodiversity, which makes ecosystems more vulnerable to pests, diseases, and environmental changes. This lack of variety can disrupt food webs and habitat availability for various species, leading to a decline in wildlife populations. Additionally, monocultures can degrade soil health and water quality, ultimately diminishing the forest's resilience and ecological functions. Overall, diverse forests are essential for maintaining ecological balance and sustainability.