How does deforestation affect decomposition processes?

Deforestation disrupts decomposition processes by altering the environmental conditions that support decomposer activity and nutrient cycling. When forest cover is removed, key factors such as temperature, moisture, and organic matter availability change significantly.

One major impact is the reduction in leaf litter and organic input. Forest ecosystems continuously supply organic material through falling leaves, branches, and dead organisms. Deforestation cuts off this input, limiting the substrate available for decomposers and slowing down nutrient recycling.

At the same time, exposed soil experiences higher temperatures and reduced moisture retention. Increased sunlight can initially speed up decomposition, but prolonged dryness reduces microbial activity, ultimately slowing the process. Loss of tree cover also decreases soil stability, leading to erosion, which removes nutrient-rich topsoil where most decomposition occurs.

Deforestation also reduces biodiversity, including decomposer organisms such as fungi, bacteria, and detritivores. This weakens the decomposition network and disrupts ecosystem balance.

Additionally, changes in decomposition affect the carbon cycle. Faster breakdown of remaining organic matter can release more carbon dioxide, while reduced humus formation limits long-term carbon storage.

Overall, deforestation destabilizes decomposition processes, leading to poor soil fertility, disrupted nutrient cycles, and reduced ecosystem productivity.