Final answer:
The tropical rainforest is the least resilient to deforestation due to its high biodiversity, complex ecological networks, and tendency for soil degradation and altered microclimates following deforestation.
Step-by-step explanation:
The forest type that is the least resilient to deforestation is the tropical rainforest. Tropical rainforests have incredibly high levels of biodiversity and complex ecological networks that are deeply affected by deforestation. Once cleared, these forests do not regenerate easily due to soil degradation, changes in microclimate, and loss of seed sources provided by the diverse plant species. In contrast, although all types of forests can suffer from deforestation, boreal forests, temperate deciduous forests, and temperate rainforests tend to be more resilient due to factors like more nutrient-rich soils, less intense tropical weathering processes, and at times, a less complex understorey which can make recovery more feasible.