What role does a diverse species mix play in urban forestry?

A diverse species mix in urban forestry plays a crucial role in reducing the risk of pests and diseases. When multiple species of trees are planted rather than a monoculture of one species, it creates a situation where pests and diseases that may be specific to a particular species have a harder time spreading through the entire population. This diversity acts as a buffer, as it ensures that if one species is affected by a pest or disease outbreak, other species may remain unaffected, thus maintaining the health of the urban forest as a whole.

In addition to promoting resilience against pests and diseases, a diverse species mix can contribute to overall ecological stability and enhance biodiversity. It supports a wider range of wildlife, contributes to greater soil health, and can provide various ecosystem services. By reducing susceptibility to widespread health crises, urban forests with a diverse tree population can better thrive and sustain their environment for longer periods.