Which of the following factors contributes to sustainable landscaping practices?

Biodiversity enhancement is a key factor in sustainable landscaping practices because it promotes a healthy ecosystem. By encouraging a variety of plant species, biodiversity helps create habitats for various organisms, which can lead to improved soil health, pest control, and pollination services. A diverse landscape is more resilient to pests and diseases, reducing the need for chemical interventions and resulting in a more balanced ecosystem.

In contrast, the other options compromise sustainability. Dependence on chemical fertilizers can lead to nutrient runoff, harming water quality and negatively impacting surrounding habitats. Monoculture planting reduces biodiversity, making ecosystems more vulnerable to disease and pest outbreaks, and often necessitates increased chemical use. Installing synthetic turf, while it may seem low-maintenance, can contribute to heat island effects, reduce water infiltration, and negatively impact local wildlife habitats. Thus, promoting biodiversity stands out as a fundamental practice in achieving sustainable landscaping.