Why has heavy grazing caused land degradation in some parts of Queensland?

Heavy grazing has contributed to land degradation in parts of Queensland primarily through the physical and biological damage inflicted on soil and vegetation.

When livestock graze, they may consume plants down to the ground, which inhibits growth by reducing the tissues available for photosynthesis. Furthermore, the movement of herds to and from water sources leads to trampling, which kills vegetation and destroys the roots that bind the soil together. This process leaves the land vulnerable to erosion, as rainfall can easily wash away unprotected topsoil along animal paths. Repeated movement also compacts the soil, further hindering root development.1

Beyond physical damage, grazing pressure alters plant communities by favoring inedible species over native grasses, which can lead to persistent changes in the landscape. In Queensland, overgrazing has specifically caused the deterioration of native grasslands, saltbush, and stunted trees in the interior. To combat these issues, land managers are increasingly adopting sustainable practices, such as rotational grazing, to protect biodiversity and restore land health.12